LaMotte COD3 Plus Operator'S Manual Download Page 44

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Boron

COD3 Plus Colorimeter 10.16

APPLICATION:

Surface and saline waters, hydroponic solutions, industrial
waste, swimming pools.

RANGE:

0.00–0.80 ppm Boron

MDL:

0.05

METHOD:

Azomethine-H and borate form a yellow complex at pH 6 in
proportion to the concentration of boron present.

SAMPLE HANDLING &
PRESERVATION:

Store samples in polyethylene bottles. Do not use borate
detergents or glassware.

INTERFERENCES:

Interferences in drinking water are unlikely. Manganese,
zirconium, chromium, titanium, copper, vanadium,
aluminum, beryllium and iron may cause high results.

Testing

Summary of Contents for COD3 Plus

Page 1: ...rmware Version 2 10 and greater PO Box 329 Chestertown MD 21620 800 344 3100 410 778 3100 www lamotte com Warning This set contains chemicals that may be harmful if misused Read cautions on individual containers carefully Not to be used by children except under adult supervision ...

Page 2: ......

Page 3: ...ting Power Save 13 Setting Backlight Time 14 Selecting A Language 15 Looping Menus 16 COMPUTER CONNECTION Output 17 Computer Connection 17 BATTERY Battery AC Operation 17 Battery Replacement 18 MAINTENANCE Cleaning 18 Repairs 18 Meter Disposal 19 GENERAL OPERATING INFORMATION Overview 19 General Operating Information 19 The Keypad 20 The Display and Menus 20 Tubes and Chambers 22 Sample Holders 23...

Page 4: ...Precautions 24 Safety Precautions 24 Limits of Liability 24 Speciﬁcations 25 CE 26 IP67 26 Warranty 26 Register Your Meter 26 TROUBLE SHOOTING GUIDE Error Messages 27 Calibration 27 Stray Light 27 Troubleshooting Guide 28 TEST PROCEDURES ALPHABETICAL ORDER ...

Page 5: ...r Code 1721 USB Cable Code 1720 COD3 Plus Colorimeter Manual Accessories Test Tubes with Caps Code 0290 6 Replacement Chamber Code 3 0038 USB Cable Code 1720 USB Wall Adapter Code 1721 COD UDV Adapter Code 1724 Car Charger Code 5 0132 Small Field Carrying Case 37 5 27 5 x 13 75 cm Code 1910 GCS150 Large Field Carrying Case 45 x 32 5 x 20 cm Code 1910 GCS440 ...

Page 6: ...otte com for a current list of available calibrations TESTING WITH LaMOTTE PRE PROGRAMMED TESTS 1 Press and brieﬂy hold to turn the meter on The LaMotte logo screen will appear for about 3 seconds and the Main Menu will appear Main Menu Testing Menu Editing Menu 12 00 00 001 500 2 Press ENTER to select Testing Menu All Tests 006 Ammonia N LRF 007 Ammonia N LRS 008 Ammonia N HR 014 Boron 12 00 00 0...

Page 7: ...ear on the screen 007 Ammonia N LRS 1 00 ppm Scan Blank Scan Sample 12 00 00 001 500 To repeat the test press ENTER to scan the sample again The last blank scanned is used by the colorimeter for repeated scans A diﬀerent blank can be used by pressing or to scroll to Scan Blank and then scanning another blank Scroll with or and make another selection with ENTER The T or Absorbance of the last test ...

Page 8: ... test a standard should be chosen that is close to the concentration of the samples The standardization procedure should be followed as often as required by regulations and laws for compliance monitoring In the example below the Aluminum calibration will be standardized Prepare a standard solution to be tested In this example 0 30 ppm ammonia nitrogen 1 Press and brieﬂy hold to turn the meter on T...

Page 9: ...6 Insert the reacted standard solution into the chamber Close the lid Press ENTER to scan the sample The screen will display Scan Sample Sample Done for about 1 second The result will appear on the screen 007 Ammonia N LRS 0 28 ppm Scan Blank Scan Sample 12 00 00 001 500 7 The displayed result can now be standardized Press or to scroll to Calibrate 007 Ammonia N LRS 0 28 ppm T Abs Calibrate 12 00 ...

Page 10: ...RS 0 30 ppm Edit ENTER Save ENTER Default 12 00 00 001 500 10 Press ENTER to save the value To leave the Calibration procedure without saving the adjustment press EXIT Press and ENTER at any time to return to the default value The calibration has now been standardized and can be used for testing Scroll to Scan Blank and begin testing 007 Ammonia N LRS 0 30 ppm T Abs Calibrate 12 00 00 001 500 ...

Page 11: ...2 00 00 001 500 2 Press ENTER to select Set Clock The year is displayed Press or to scroll to the appropriate character Press ENTER to select the character The month day hour format hour minute second AM PM will be dislpayed Repeat for each Set Time Year 2000 12 00 00 001 500 3 Press ENTER to select the ﬁnal character The time and date will be saved and the meter will return to the Editing Menu Ed...

Page 12: ...n 1 From the Editing Menu press or to scroll to Logging Editing Menu Set Clock Logging Factory Setup Set Power Save 12 00 00 001 500 2 Press ENTER to select Logging Logging Display Test Log Logging Enabled Logging Disabled Erase Log 12 00 00 001 500 3 Press or to scroll to desired function Logging Display Test Log Logging Enabled Logging Disabled Erase Log 12 00 00 001 500 4 Press ENTER The screen...

Page 13: ...ting 1 From the Editing Menu press or to scroll to Set Power Save Editing Menu Set Clock Logging Factory Setup Set Power Save 12 00 00 001 500 2 Press ENTER to select Set Power Save Set Power Save Disable 5 Minutes 15 Minutes 30 Minutes 12 00 00 001 500 3 Press or to scroll to desired function Set Power Save Disable 5 Minutes 15 Minutes 30 Minutes 12 00 00 001 500 4 Press ENTER The screen will dis...

Page 14: ...r The longer the backlight is on the more frequently the battery will have to be charged if the USB Wall Adapter is not being used 1 From the Editing Menu press or to scroll to Backlight Time Editing Menu Logging Factory Setup Set Power Save Set Backlight Time 12 00 00 001 500 2 Press ENTER to select Set Backlight Time Set Backlight Time Button Control 10 seconds 20 seconds 30 seconds 12 00 00 001...

Page 15: ... Language English Spanish French Portugese 12 00 00 001 500 3 Press or to scroll to desired language Select Language English Spanish French Portugese 12 00 00 001 500 4 Press ENTER The screen will display Storing for about 1 second and the meter will return to the Editing Menu Editing Menu Set Power Save Set Backlight Time Bluetooth Menu Select Language 12 00 00 001 500 NOTE If meter unintentional...

Page 16: ...ast choice So all menu choices can be reached by scrolling in either direction The diagrams below demonstrate a looping menu AND SO ON AND SO ON AND SO ON THIRD TO LAST LAST CHOICE LAST CHOICE SECOND TO LAST AND SO ON AND SO ON LAST CHOICE TESTING MENU TESTING MENU TESTING MENU FIRST CHOICE SECOND CHOICE THIRD TO LAST THIRD TO LAST THIRD CHOICE SECOND TO LAST SECOND TO LAST ANOTHER LAST CHOICE LAS...

Page 17: ...smaller end of the USB cable USB mini B connector into the meter and the larger end of the USB cable USB Type A connector into the wall adapter Plug the wall adapter into an AC outlet Reinsert the USB port plug after charging To charge the battery from a computer plug the smaller end of the USB cable USB mini B connector into the meter and the larger end of the USB cable USB Type A connector into ...

Page 18: ...y that is only available from LaMotte Company Battery replacement must be performed at a LaMotte authorized repair facility The water resistant housing of this meter should not be opened by the user Contact LaMotte Company by phone 1 800 344 3100 or email tech lamotte com for a return authorization number MAINTENANCE CLEANING Clean the exterior housing with a damp lint free cloth Do not allow wate...

Page 19: ...olled direct reading colorimeter It has a graphical liquid crystal display and 6 button keypad These allow the user to select options from the menu driven software to directly read test results or to review stored results of previous tests in the data logger The menus can be displayed in seven diﬀerent languages The LaMotte tests are precalibrated for LaMotte reagent systems The colorimeter displa...

Page 20: ...o general formats that are followed from one menu to the next Each menu is a list of choices or selections The display has a header line at the top and a footer line at the bottom The header displays the title of the current menu The footer line displays the time and the date the data logger status the bluetooth printer status and the battery status The menu selection window is in the middle of th...

Page 21: ...lled through the light bar will highlight diﬀerent menu choices Pressing the ENTER button will select the menu choice that is indicated by the light bar In the second format the menu choice window takes advantage of the graphical capabilities of the display Large format graphic information such as test results or error messages or the LaMotte logo is displayed The top two lines of the display are ...

Page 22: ...niﬁcant scratches especially the central zone between the bottom and the sample line Scratches ﬁngerprints and water droplets on the tube can cause stray light interference leading to inaccurate results Tubes that have been scratched in the light zone through excessive use should be discarded and replaced with new ones Tubes should always be washed on the inside and outside with mild detergent pri...

Page 23: ...e posts on the chamber Turn the adapter counterclockwise until the arrows are at the top and bottom of the chamber and the adapter is locked into place Turn the adapter clockwise to unlock the adapter and remove it from the chamber SAMPLE DILUTION TECHNIQUES If a test result is out of the range of the meter it must be diluted The test should then be repeated on the diluted sample The following tab...

Page 24: ...otte reagent containers prior to use Some containers include precautionary notices and ﬁrst aid information Certain reagents are considered hazardous substances and are designated with a in the instruction manual Safety Data Sheets SDS can be found at www lamotte com Read the SDS before using these reagents Additional emergency information for all LaMotte reagents is available 24 hours a day from ...

Page 25: ...utomatic wavelength selection User Deﬁned Tests Up to 25 user tests can be input Languages English Spanish French Portuguese Italian Chinese Japanese Temperature Operation 0 50 C Storage 40 60 C Operation Humidity Range 0 90 RH non condensing USB Port Mini B Power Requirements USB wall adapter USB computer connection or lithium ion rechargeable battery Battery Charge Life Approximately 380 tests w...

Page 26: ...a return authorization number or visit www lamotte com for troubleshooting help The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of speciﬁcation improper maintenance or repair or unauthorized modiﬁcation LaMotte...

Page 27: ...D Overrange Enter continue Scan Blank Scan Sample 12 00 00 001 500 CALIBRATION As with all pre calibrated meters it is highly recommended even if not required by regulations that the user periodically verify the performance of the meter by running standards with a predetermined concentration Results outside of speciﬁcation are an indication that the meter needs to be adjusted This can be done foll...

Page 28: ...ttery or use USB wall computer adapter Shut Down Low Batt Shut Down Battery is too low to operate the unit Charge battery or use USB wall computer adapter Overrange Sample is outside of acceptable range Dilute sample and test again Unusually large negative or positive readings when performing calibration Incorrect standards used to calibrate meter Use fresh 0 0 standard in clean tube Reset meter t...

Page 29: ...COD3 Plus Colorimeter Test Procedures Firmware Version 2 10 and greater ...

Page 30: ......

Page 31: ... 1 25 COD High Range 030 0 15000 500 Digestion 1 25 Color 033 0 1000 cu 20 Platinum Cobalt 0 Copper Cuprizone 035 0 00 2 00 0 03 Cuprizone 2 50 Copper Thiocarbamate 036 0 00 6 00 0 10 Diethyldithiocarbamate 1 50 Cyanuric Acid 039 5 200 10 Melamine 1 50 Dissolved Oxygen 043 0 0 11 0 0 6 Winkler Colorimetric 3 100 Fluoride 045 0 0 2 0 0 1 SPADNS 2 50 Hydrazine 049 0 00 1 00 0 01 P dimethyl aminobenz...

Page 32: ...est Method of Reagents of Tests Sulfide Low Range 090 0 00 1 50 0 06 Methylene Blue 3 50 Tannin 093 0 0 10 0 0 1 Tungsto molybdophosphoric Acid 2 50 Turbidity 095 0 400 FAU 3 Absorption 0 Zinc Low Range 097 0 00 3 00 0 05 Zincon 6 50 ...

Page 33: ...450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Ammonia nitrogen is present in various concentrations in many surface and ground water supplies Any sudden change in the concentration of ammonia nitrogen in a water supply is cause for suspicion A pro...

Page 34: ...n iron catalyst to form a blue indophenol dye the concentration of which is proportional to the ammonia concentration in the sample SAMPLE HANDLE PRESERVATION Ammonia solutions tend to be unstable and should be analyzed immediately Samples may be stored for 24 hours at 4 C or 28 days at 20 C INTERFERENCES There are few interferences in most natural waters High concentrations of reducing agents suc...

Page 35: ... and all solid has dissolved Wait 12 minutes for maximum color development 10 At the end of the 12 minute waiting period immediately mix and insert tube into chamber close lid and select Scan Sample Record result 11 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection CALCULATIONS To express results as Unionized Ammonia NH3 ppm Unionized Ammonia NH3 ...

Page 36: ...mix until dissolved Wait 1 minute 9 At end of 1 minute waiting period use 0 1 g spoon 0699 to add two measures of Salicylate 3 Reagent Powder 7458 Cap and shake vigorously for at least 30 seconds and all solid has dissolved Wait 20 minutes for maximum color development 10 At the end of the 20 minute waiting period immediately mix and insert tube into chamber close lid and select Scan Sample Record...

Page 37: ...water blank Then follow the above procedure to perform the test on a distilled or deionized water sample This test result is the reagent blank Subtract the reagent blank from all subsequent test results of unknown samples It is necessary to determine the reagent blank only when a new lot number of reagents is obtained Testing ...

Page 38: ...Ammonia Nitrogen Low Range COD3 Plus Colorimeter 10 16 Testing ...

Page 39: ...y email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Ammonia nitrogen is present in various concentrations in many surface and ground water supplies Any sudden change in the concentration of ammonia nitrogen in a water supply is cause for suspicion A product of microbiological activity ammonia nitro...

Page 40: ...monia present in the sample Rochelle salt is added to prevent precipitation of calcium or magnesium in undistilled samples SAMPLE HANDLING PRESERVATION Ammonia solutions tend to be unstable and should be analyzed immediately Sample may be stored for 24 hours at 4 C or 28 days at 20 C INTERFERENCES Sample turbidity and color may interfere Turbidity may be removed by a ﬁltration procedure Color inte...

Page 41: ...mple Record result 10 Press to turn the colorimeter oﬀ or press the EXIT exit to a previous menu or make another menu selection CALCULATIONS To express results as Unionized Ammonia NH3 ppm Unionized Ammonia NH3 ppm Ammonia Nitrogen NH3 N x 1 2 To express results as Ionized Ammonia NH4 ppm Ionized Ammonia NH4 ppm Ammonia Nitrogen NH3 N x 1 3 To determine the percentages of Unionized and Ionized Amm...

Page 42: ...Ammonia Nitrogen High Range COD3 Plus Colorimeter 10 16 Testing ...

Page 43: ...rinted copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Small amounts of boron are necessary for plant growth but large amounts can be toxic In humans boron aids in the uptake of calcium and the production of strong bones An excess of boron can aﬀect the central nervous sys...

Page 44: ...e H and borate form a yellow complex at pH 6 in proportion to the concentration of boron present SAMPLE HANDLING PRESERVATION Store samples in polyethylene bottles Do not use borate detergents or glassware INTERFERENCES Interferences in drinking water are unlikely Manganese zirconium chromium titanium copper vanadium aluminum beryllium and iron may cause high results Testing ...

Page 45: ...108 Close top 9 Start a second timer set for 30 minutes Do not open the chamber during the waiting time The reaction is photosensitive 10 When 2 minutes remain on the ﬁrst timer Reagent Blank press and hold ON button until colorimeter turns on 11 Press and hold until colorimeter turns on 12 Press ENTER to select Testing Menu 13 Select All Tests or another sequence containing 014 Boron from Testing...

Page 46: ...Boron COD3 Plus Colorimeter 10 16 Testing ...

Page 47: ...mple if the code is 4450WT H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Cobalt rarely occurs in natural water It is used in the manufacture of alloys to increase corrosion resistance and strength It is found in wastewaters as a corrosio...

Page 48: ... Solution 4854 Cap and invert 15 times to thoroughly mix 12 Wait 5 minutes DO NOT MIX 13 Insert tube into chamber close lid and select Scan Sample Record result in ppm cobalt 14 Press to turn the colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTE For best possible results a reagent blank should be determined to account for any contribution to the test resul...

Page 49: ...search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 COD Low Range Mercury Free Tubes are not USEPA approved COD Low Range Mercury Tubes are USEPA approved Equipment needed but not supplied 1 COD Adapter 5 0087 1 COD Reactor 12 tube 110V 5 0102 o...

Page 50: ...ized in a blender 100 mL for 30 seconds and then stirred gently with a magnetic stirrer INTERFERENCES Volatile organic compounds are not oxidized to the extent that they are in the vapor above the digestion solution Therefore they do not contribute to the COD reading Chloride concentrations above 10 of COD interfere with the mercury free tubes Chloride above 2000 ppm will interfere with the mercur...

Page 51: ...ubes from block heater Invert several times to mix 10 Allow to cool to room temperature 11 Press and hold until colorimeter turns on 12 Press ENTER to select Testing Menu 13 Select All Tests or another sequence containing 031 COD LR from Testing Menu 14 Scroll to and select 031 COD LR from menu 15 Wipe the blank tube with a damp towel to remove ﬁngerprints and smudges Wipe with a dry towel 16 Inse...

Page 52: ...ation wash all glassware with 20 sulfuric acid For greater accuracy a minimum of three repetitions should be performed and the results averaged Some samples may be digested completely in less than two hours The concentration may be measured at 15 minute intervals while the vials are still hot until the reading remains unchanged The vials should be cooled to room temperature before the ﬁnal measure...

Page 53: ...T H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 COD Standard Range Mercury Free Tubes are not USEPA approved COD Standard Range Mercury Tubes are USEPA approved Equipment needed but not supplied 1 COD Adapter 5 0087 1 COD Reactor 12 tube...

Page 54: ...a blender 100 mL for 30 seconds and then stirred gently with a magnetic stirrer INTERFERENCES Volatile organic compounds are not oxidized to the extent that they are in the vapor above the digestion solution Therefore they do not contribute to the COD reading Chloride concentrations above 10 of COD interfere with the mercury free tubes Chloride above 2000 ppm will interfere with the mercury tubes ...

Page 55: ... tubes from block heater Invert several times to mix 10 Allow to cool to room temperature 11 Press and hold until colorimeter turns on 12 Press ENTER to select Testing Menu 13 Select All Tests or another sequence containing 032 COD SR from Testing Menu 14 Wipe the blank tube with a damp towel to remove ﬁngerprints and smudges Wipe with a dry towel 15 Scroll to and select 032 COD SR from menu 16 In...

Page 56: ...ination wash all glassware with 20 sulfuric acid For greater accuracy a minimum of three repetitions should be performed and the results averaged Some samples may be digested completely in less than two hours The concentration may be measured at 15 minute intervals while the vials are still hot until the reading remains unchanged The vials should be cooled to room temperature before the ﬁnal measu...

Page 57: ...450WT H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 COD High Range Mercury Free Tubes and COD High Range Mercury Tubes are not USEPA approved Equipment needed but not supplied 1 COD Adapter 5 0087 1 COD Reactor 12 tube 110V 5 0102 or 1 C...

Page 58: ...ded solids should be homogenized in a blender 100 mL for 30 seconds and then stirred gently with a magnetic stirrer INTERFERENCES Volatile organic compounds are not oxidized to the extent that they are in the vapor above the digestion solution Therefore they do not contribute to the COD reading Contains mercury sulfate to prevent interference from chloride Nitrite gives a positive interference of ...

Page 59: ...s from block heater Invert several times to mix 10 Allow to cool to room temperature 11 Press and hold until colorimeter turns on 12 Press ENTER to select Testing Menu 13 Select All Tests or another sequence containing 030 COD HR from Testing Menu menu 14 Wipe the blank tube with a damp towel to remove ﬁngerprints and smudges Wipe with a dry towel 15 Scroll to and select 030 COD HR from menu 16 In...

Page 60: ...t of samples and with each lot of reagents The reacted blank will be stable if stored in the dark To eliminate error caused by contamination wash all glassware with 20 sulfuric acid For greater accuracy a minimum of three repetitions should be performed and the results averaged Testing ...

Page 61: ...terway APPLICATION Potable water and water with color due to natural materials RANGE 0 1000 color units MDL 20 cu METHOD Color is determined by a meter that has been calibrated with colored standards of known platinum cobalt concentration True color the color of water in which the turbidity has been removed is measured SAMPLE HANDLING PRESERVATION Collect all samples in clean glassware Determine c...

Page 62: ...h color free water distilled or deionized water Fill to 10 mL line with color free water 6 Insert the tube into chamber close lid and select Scan Blank 7 Remove tube from colorimeter Empty tube 8 Rinse tube with sample water Fill to 10 mL line with water sample 9 Insert tube with sample water close lid and select Scan Sample Record result in color units 10 Press to turn the colorimeter oﬀ or press...

Page 63: ... used in the control of algae or have become contaminated from untreated industrial wastes The addition of copper sulfate to lakes causes an increase in the copper content of the sediments Acid waters and those high in free carbon dioxide may cause the corrosion or eating away of copper brass and bronze pipes and ﬁttings This corrosion results in the addition of copper to the water supply APPLICAT...

Page 64: ...id and select Scan Sample Record result 11 Press to turn the colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTE For best possible results a reagent blank should be determined to account for any contribution to the test result by the reagent system To determine the reagent blank follow the above test procedure to scan a distilled or deionized water blank The...

Page 65: ...ed with a copper compound like those used in the control of algae or have become contaminated from untreated industrial wastes The addition of copper sulfate to lakes causes an increase in the copper content of the sediments Acid waters and those high in free carbon dioxide may cause the corrosion or eating away of copper brass and bronze pipes and ﬁttings This corrosion results in the addition of...

Page 66: ... 0290 with sample water Fill to the 10 mL line with sample 6 Insert tube into chamber close lid and select Scan Blank 7 Remove tube from colorimeter and add 5 drops of Copper 1 6446 Cap and mix Solution will turn yellow if copper is present 8 Insert tube into chamber close lid and select Scan Sample Record result 9 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make anoth...

Page 67: ... a stabilizing agent for free chlorine residuals It minimizes the loss of chlorine from the action of ultraviolet rays in sunlight Cyanuric acid levels in pools should be maintained between 25 and 75 ppm and various public health associations recommend that the concentration should never exceed 100 150 ppm APPLICATION Swimming pool waters RANGE 5 200 ppm Cyanuric Acid MDL 10 ppm METHOD A buﬀered s...

Page 68: ...yringe 0807 to add 5 mL of Cyanuric Acid Test Solution 4856 Cap and mix thoroughly A precipitate will form if cyanuric acid is present Wait 1 minute NOTE This reagent bottle has a special ﬁtting which enables the syringe to be inserted into the top of the bottle With syringe in place invert bottle and withdraw syringe plunger until 5 mL of reagent is contained in the syringe barrel Remove syringe ...

Page 69: ... call collect 813 248 0585 Dissolved oxygen is vital to the survival of aquatic organisms Naturally present dissolved oxygen enters the water when plants photosynthesize Wind and wave action also cause oxygen from the air to dissolve into water Dissolved oxygen is consumed by aquatic animals and by the oxidation or chemical breakdown of dead and decaying plants and animals The concentration of dis...

Page 70: ...e while adding the reagents in steps 5 and 6 Simply drop the reagents into the sample Cap carefully and mix gently 5 Add 2 drops of Manganese Sulfate Solution 4167 and 2 drops of Alkaline Potassium Iodide Azide 7166 Cap and mix by inverting several times A precipitate will form Allow the precipitate to settle below the shoulder of the tube before proceeding 6 Add 8 drops of Sulfuric Acid 1 1 6141W...

Page 71: ...inse a clean tube 0290 with untreated sample water Fill to the 10 mL line with sample This tube is the BLANK 6 Insert tube into chamber close lid and select Scan Blank 7 Fill a second tube 0290 to the 10 line with the treated Fixed sample This tube is the SAMPLE 8 Remove BLANK from colorimeter insert SAMPLE tube into chamber close lid and select Scan Sample Record result 9 Press to turn colorimete...

Page 72: ...Dissolved Oxygen COD3 Plus Colorimeter 10 16 Testing ...

Page 73: ... the four digit code number For example if the code is 4450WT H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Fluoride may occur naturally in some ground waters or it may be added to public drinking water supplies to maintain a 1 0 mg L co...

Page 74: ...d becomes progressively lighter Samples may be stored and refrigerated in plastic containers SAMPLE HANDLING PRESERVATION INTERFERENCES The following substances produce a positive interference at the concentration given Chloride Cl 7000 mg L Phosphate PO4 3 16 mg L NaPO3 6 1 mg L he following substances produce a negative interference at the concentration given Alkalinity CaCO3 5000 mg L Aluminum ...

Page 75: ...rless ﬂuoride free water 6 Use the 0 5 mL pipet 0353 to add 0 5 mL of Sodium Arsenite Solution 4128 Cap and mix 7 Use the 1 0 mL pipet 0354 to add 2 measures of Acid Zirconyl SPADNS Reagent 3875 Cap and mix thoroughly This is the reagent blank 8 Insert tube into chamber close lid and select Scan Blank 9 Rinse a clean tube 0290 with sample water Fill to the 10 mL line with sample water Repeat steps...

Page 76: ...Fluoride COD3 Plus Colorimeter 10 16 Testing ...

Page 77: ... by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Hydrazine N2 H4 is added to the water in high pressure boilers to reduce corrosion by acting as an oxygen scavenger APPLICATION Water and boiler water industrial waste water RANGE 0 00 1 00 ppm Hydrazine MDL 0 01 ppm METHOD p Dimethylaminobenzal...

Page 78: ...d portion of Hydrazine Reagent B may remain in bottom of tube without adversely aﬀecting results 9 At the end of the 2 minute waiting period mix insert tube into chamber close lid and select Scan Sample Record result 10 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTE For best possible results a reagent blank should be determined to account ...

Page 79: ...he divalent state due to the lack of oxygen In surface waters manganese may be in various oxidation states as soluble complexes or as suspended compounds Manganese is rarely present in excess of 1 mg L It may impart an objectionable taste or cause staining problems in laundry but manganese levels normally encountered in water seldom produce any health hazards Manganese is removed from water by var...

Page 80: ...oon 0699 to add two measures of Manganese Buﬀer Reagent 6310 Cap and mix until powder dissolves 8 Use the 0 15 g spoon 0727 to add one measure of Manganese Periodate Reagent 6311 Cap and shake for one minute An undissolved portion of the reagent may remain in the bottom of the tube without adversely aﬀecting the test results Wait two minutes for maximum color development Solution will turn pink if...

Page 81: ...ample if the code is 4450WT H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Nickel is not usually found in natural waters except as a result of contamination from industrial wastewaters as a corrosion product of stainless steel and nickel ...

Page 82: ...test sample 8 Fill a second clean tube 0290 to 10 mL line with deionized water or untreated sample water This is the blank 9 Press and hold until colorimeter turns on 10 Press ENTER to select Testing Menu 11 Select All Tests or another sequence containing 064 Nickel from Testing Menu 12 Scroll to and select 064 Nickel from menu 13 Insert the blank into chamber close lid and select Scan Blank 14 In...

Page 83: ... if the code is 4450WT H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Ozone is sometimes used in place of or in conjunction with chlorine or other halogens for disinfection of pool spa or drinking waters Recently large aquatic facilities ...

Page 84: ...sampling site 6 Lower end of tubing of sampling apparatus to desired depth Slowly withdraw and depress plunger several times to purge syringe and tubing Slowly withdraw plunger to ﬁll purged syringe 7 Remove plastic tubing from syringe Remove cap from the prepared tube Place tip of syringe against inside of the prepared tube Slowly depress plunger and ﬁll to the 10 mL line and cap This is the Samp...

Page 85: ...tor 3990 to each tube Cap tubes 5 Take one of the prepared tubes 0290 and sampling apparatus 0681 to sampling site 6 Lower end of tubing of sampling apparatus to desired depth Slowly withdraw and depress plunger several times to purge syringe and tubing Slowly withdraw plunger to ﬁll purged syringe 7 Remove plastic tubing from syringe Remove cap from the prepared tube Place tip of syringe against ...

Page 86: ...orimeter 10 16 15 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTE HR Reagent must be made fresh each week If reagent is refrigerated it may be kept up to 3 weeks Testing ...

Page 87: ...earch 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Phosphorus is an important nutrient for aquatic plants The amount found in water is generally not more than 0 1 ppm unless the water has become polluted from waste water sources or excessive dra...

Page 88: ...s may be converted to the orthophosphate form by persulfate digestion SAMPLE HANDLING PRESERVATION If benthic deposits are present in the area being sampled great care should be taken not to include these deposits If the analysis cannot be performed the same day of collection the sample should be preserved by the addition of 2 mL of concentrated sulfuric acid or 40 mg mercuric chloride per liter a...

Page 89: ...er close lid and select Scan Blank 7 Remove tube from colorimeter Use 1 0 mL pipet 0354 to add 1 0 mL of Phosphate Acid Reagent V 6282 Cap and mix 8 Use the 0 1 g spoon 0699 to add one measure of Phosphate Reducing Reagent V 6283 Cap and mx until powder dissolves Wait 5 minutes for full color development Solution will turn blue if phosphates are present 9 At end of 5 minute waiting period mix inse...

Page 90: ...Phosphate Low Range COD3 Plus Colorimeter 10 16 Testing ...

Page 91: ...55 3924 International call collect 813 248 0585 Phosphate treatments in boiler and cooling water and other industrial water systems are run at levels up to 100 ppm orthophosphate These high levels permit the use of a simpler high range test APPLICATION Boiler cooling and industrial water RANGE 0 0 70 0 ppm Orthophosphate MDL 0 5 ppm METHOD Orthophosphate reacts in acid conditions with ammonium van...

Page 92: ...ube 0290 with sample water Fill to the 10 mL line with sample 6 Insert tube into chamber close lid and select Scan Blank 7 Remove tube from colorimeter Use the 1 0 mL pipet 0354 to add 2 0 mL of VM Phosphate Reagent 4410 Cap and mix Wait 5 minutes for full color development 8 After 5 minute waiting period mix insert tube into chamber close lid and select Scan Sample Record result 9 Press to turn c...

Page 93: ...hem Tel US 1 800 255 3924 International call collect 813 248 0585 Potassium as the seventh most common element on the Earth may be found in minor quantities in most water supplies It seldom exceeds 10 ppm in drinking water and usually is less than 2 ppm In some brine or runoﬀ in agricultural areas the potassium concentration may reach 100 ppm APPLICATION Drinking surface and saline water RANGE 0 0...

Page 94: ...iting period mix tube again to suspend any settled precipitate Insert tube into chamber close lid and select Scan Sample Record result 10 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTES For best possible results a reagent blank should be determined to account for any contribution to the test result by the reagent system To determine the re...

Page 95: ...tional call collect 813 248 0585 Silicon dioxide SiO2 commonly known as silica occurs in all natural water Silica may be present as suspended insoluble particles in a colloidal or polymeric state It may also be present in a reactive form as silicic acid or silicate ions Silica is a major nutrient for diatoms A silica cycle occurs in many bodies of water containing organisms such as diatoms that us...

Page 96: ...cid complex This silica molybdate complex is then reduced by ascorbic acid to produce an intense blue color SAMPLE HANDLING PRESERVATION Silica samples may be preserved by refrigeration at 4 C in plastic containers up to one week without any change in silica concentration INTERFERENCES Sulﬁdes and large amounts of iron interfere Color and turbidity may be removed by standardizing the instrument wi...

Page 97: ...lica Reagent 4 V 6284 Cap and mix gently until powder has dissolved Wait 5 minutes for full color development 11 At end of 5 minute waiting period mix insert tube into chamber close lid and select Scan Sample Record result 12 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTE For best possible results a reagent blank should be determined to ac...

Page 98: ...Silica Low Range COD3 Plus Colorimeter 10 16 Testing ...

Page 99: ...0585 Silicon dioxide SiO2 commonly known as silica occurs in all natural water Silica may be present as suspended insoluble particles in a colloidal or polymeric state It may also be present in a reactive form as silicic acid or silicate ions Silica is a major nutrient for diatoms A silica cycle occurs in many bodies of water containing organisms such as diatoms that use silica in their skeletal s...

Page 100: ...e amount of silica present Phosphate also reacts with molybdate but the addition of oxalic acid eliminates the molybdophosphoric acid complex SAMPLE HANDLING PRESERVATION Silica samples may be preserved by refrigeration at 4 C in plastic containers up to one week without any change in silica concentration INTERFERENCES Sulﬁdes and large amounts of iron interfere Color and turbidity may be removed ...

Page 101: ... select Scan Blank 7 Remove tube from colorimeter Add 6 drops Silica Reagent 1 V 4466 Cap and invert to mix 8 Add 12 drops of Silica Reagent 2 V 4467 Cap and mix Wait 5 minutes 9 At end of 5 minute waiting period add 8 drops of Silica Reagent 3 V 4468 Cap and mix 10 Insert tube into chamber close lid and select Scan Sample Record result 11 Press to turn colorimeter oﬀ or press EXIT to exit to a pr...

Page 102: ...Silica High Range COD3 Plus Colorimeter 10 16 Testing ...

Page 103: ...d feed appreciable quantities of this compound to the watershed Acid mine water drainage is a form of pollution which may contribute extremely large amounts of sulfate content to natural waters Other sources of sulfate include waste material from pulp mills steel mills food processing operations and municipal wastes Many bacteria obtain sulfur from sulfate for the synthesis of amino acids In lakes...

Page 104: ...Cap and shake until powder dissolves A white precipitate will develop if sulfates are present Wait 5 minutes 8 Mix tube again Insert tube into chamber close lid and select Scan Sample Record result 9 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTE If the sulfate concentration of the test sample is greater than 100 ppm it is recommended that...

Page 105: ...hone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 Sulﬁde occurs in many well water supplies and sometimes is formed in lakes or surface waters In distribution systems it may be formed as a result of bacterial action on organic matter under anaerobic conditions It may also be found in waters receiving sewa...

Page 106: ... which is taken up will destroy sulﬁdes by chemical action Samples that are used for total sulﬁde concentrations may be preserved by adding 2M zinc acetate solution at a dosage of 2 mL per liter of sample This precipitates sulﬁde as inert zinc sulﬁde Determination of dissolved sulﬁdes in samples not preserved with zinc acetate must be started within 3 minutes of sampling INTERFERENCES Strong reduc...

Page 107: ... tube from colorimeter Use the 1 0 mL pipet 0354 to add 1 0 mL of Sulﬁde Reagent A V 4458 Cap and mix 8 Add 6 drops of Sulﬁde Reagent B V 4459 Cap and mix Wait 1 minute Solution will turn blue if sulﬁdes are present 9 Use the 1 0 mL pipet 0354 to add 2 0 mL of Sulﬁde Reagent C 4460 Cap and mix Color development is immediate and stable 10 Insert tube into chamber close lid and select Scan Sample Re...

Page 108: ...Testing Sulfide Low Range COD3 Plus Colorimeter 10 16 ...

Page 109: ...International call collect 813 248 0585 Tannin and lignin are examples of hydroxylated aromatic compounds found in discharge wastewater from paper mills in some boiler water treatment in natural brackish water and in wastewater from leather tanning plants The taste and odor of these compounds is generally oﬀensive so that their control is important in many areas APPLICATION Industrial wastewater b...

Page 110: ...nto chamber close lid and select Scan Sample Record result 10 Press to turn colorimeter oﬀ or press EXIT to exit to a previous menu or make another menu selection NOTES For best possible results a reagent blank should be determined to account for any contribution to the test result by the reagent system To determine the reagent blank follow the above test procedure to scan a distilled or deionized...

Page 111: ...easurement of water quality APPLICATION Surface and industrial water for non compliance monitoring For compliance monitoring at low turbidity levels use a commercial nephelometer RANGE 0 500 FAU Formazin Attenuation Units MDL 3 FAU METHOD Absorptimetric 180 detector SAMPLE HANDLING PRESERVATION Measure sample as soon as possible after collection INTERFERENCES Check for stray light interference see...

Page 112: ...7 Rinse a second clean tube 0290 with sample water Fill to the 10 mL line with sample Cap tube Wipe oﬀ excess water and ﬁngerprints Shake to resuspend particulate matter Remove all bubbles before measurement 8 Insert tube into chamber close lid and select Scan Sample Record result Turbidity measurements should be taken as soon as possible after sample has been collected 9 Press to turn colorimeter...

Page 113: ... below Preparation of Formazin Stock Solution 1 Dissolve 1 000 g of Hydrazine Sulfate in deionized water and dilute to the mark in a 100 mL volumetric ﬂask 2 Dissolve 10 00 g of hexamethylenetetramine in deionized water and dilute to the mark in a 100 mL volumetric ﬂask 3 Mix 5 mL of each solution in a 100 mL volumetric ﬂask and allow to sit undisturbed for 24 hours at 25 3 C 4 At the end of the w...

Page 114: ...Testing Turbidity COD3 Plus Colorimeter 10 16 ...

Page 115: ...t code number listed on the reagent label in the contents list or in the test procedures Omit any letter that follows or precedes the four digit code number For example if the code is 4450WT H search 4450 To obtain a printed copy contact LaMotte by email phone or fax Emergency information for all LaMotte reagents is available from Chem Tel US 1 800 255 3924 International call collect 813 248 0585 ...

Page 116: ...cyanide complexes are destroyed Sodium ascorbate is added to reduce the interference of manganese SAMPLE HANDLING PRESERVATION Sample should be analyzed within 6 hours after collection The addition of hydrochloric acid will help preserve the metal ion content however the acid should be neutralized before analysis INTERFERENCES The following ions interfere in concentrations greater than those liste...

Page 117: ...rbate Powder 6316 Use 0 5 g spoon 0698 to add one measure of Zinc Buﬀer Powder 6315 Cap and shake vigorously for 1 minute Some undissolved buﬀer may remain in the bottom of the tube 8 Add 3 drops of Sodium Cyanide 10 6565 Cap and mix 9 Use the 1 mL pipet assembly to add 1 mL of Dilute Zinc Indicator Solution 6321 Cap and mix 10 Use a second plain pipet 0352 to add 4 drops of Formaldehyde Solution ...

Page 118: ...N subtract the unionized ammonia nitrogen determined in step 2 from the total ammonia nitrogen 10 C 15 C 20 C 25 C pH FW1 SW2 FW SW FW SW FW SW 7 0 0 19 0 27 0 40 0 55 7 1 0 23 0 34 0 50 0 70 7 2 0 29 0 43 0 63 0 88 7 3 0 37 0 54 0 79 1 10 7 4 0 47 0 68 0 99 1 38 7 5 0 59 0 459 0 85 0 665 1 24 0 963 1 73 1 39 7 6 0 74 0 577 1 07 0 836 1 56 1 21 2 17 1 75 7 7 0 92 0 726 1 35 1 05 1 96 1 52 2 72 2 1...

Page 119: ... Ammonia Nitrogen 1 The percentage from the table is 11 18 or 0 1118 2 1 ppm Total Ammonia Nitrogen x 0 1118 0 1118 ppm Unionized Ammonia Nitrogen 3 Total Ammonia Nitrogen 1 0000 ppm Unionized Ammonia Nitrogen 0 1118 ppm Ionized Ammonia Nitrogen 0 8882 ppm Testing COD3 Plus Colorimeter 10 16 Appendix ...

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