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OFF

HI 93725
pH & Total Hardness

REQUIRED REAGENTS

Code

Description

Quantity

HI 93710-0

pH Phenol red

5 drops

HI 93719

-0

Ca & Mg indicator 0.5 mL

HI 93719

-0

Alkali solution

0.5 mL

HI 93719

-0

EDTA solution

1 drop

HI 93719

-0

EGTA solution

1 drop

REAGENT SETS

HI 93710-01

Reagents for 100 pH tests

HI 93710-03

Reagents for 300 pH tests

HI 93719-01

Reagents for 100 hardness tests

HI 93719-03

Reagents for 300 hardness tests

For other accessories see page 48.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.
• The meter will automatically default to pH mea-

surement mode.

• When the LCD displays “- - -”, it is ready.

pH MEASUREMENTS

In order to perform pH measurements, follow the procedure on
page 46.

HARDNESS MEASUREMENTS

• Press pH/HARDNESS to select the Hardness range (the LCD

displays "ZER1").

• Follow the procedure on page 39.

Содержание MULTIPARAMETER ION SPECIFIC METERS

Страница 1: ...Instruction Manual MULTIPARAMETER ION SPECIFIC METERS Manufacturers since 1978 These Instruments are in Compliance with the CE Directives...

Страница 2: ...IPS FOR AN ACCURATE MEASUREMENT 6 COMMON SPECIFICATIONS 6 HI 93710 pH CHLORINE 7 HI 93724 CYANURIC ACID pH 9 HI 93725 pH TOTAL HARDNESS 11 HI 93741 TOTAL HARDNESS IRON LOW RANGE 13 HI 93742 IRON LOW R...

Страница 3: ...Colorimetric analysis is based on the principle that specific compounds react with others and form a color the intensity of which is proportional to the concentration of the substance to be measured W...

Страница 4: ...The optical distance d is measured by the diameter of the cuvet containing the sample The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electri...

Страница 5: ...and measurement Over range A flashing value higher than the maximum concentration readable see specifica tions indicates that the sample absorbs too much light meaning that the concentration is too hi...

Страница 6: ...cause the glass might become permanently stained Shaking the cuvet can generate bubbles in the sample causing higher readings To obtain accurate measurements remove such bubbles by swirling or by gent...

Страница 7: ...Cl2 0 00 to 2 50 mg L Total Cl2 0 00 to 3 50 mg L Resolution 0 1 pH 0 01 mg L Cl2 Accuracy 0 1 pH 0 03 mg L 3 of Cl2 reading Typical EMC 0 2 pH Deviation 0 02 mg L Cl2 Light Source Light Emitting Diod...

Страница 8: ...orine tests HI 93711 03 Reagents for 300 total chlorine tests HI 93701 F Reagents for 300 free chlorine tests liquid version HI 93701 T Reagents for 300 total chlorine tests liquid version For other a...

Страница 9: ...S 0 to 80 mg L pH 5 9 to 8 5 Resolution CYS 1 mg L pH 0 1 Accuracy CYS 1 mg L 15 of reading pH 0 1 Typical EMC CYS 1 mg L Deviation pH 0 1 Light Source Light Emitting Diode 555 nm Method For pH Phenol...

Страница 10: ...REMENT PROCEDURE Turn the meter on by pressing ON OFF The meter will automatically default to pH mea surement mode When the LCD displays it is ready pH MEASUREMENTS In order to perform pH measurements...

Страница 11: ...ess 0 00 to 2 70 mg L Total Hardness 0 00 to 4 70 mg L Resolution pH 0 1 Hardness 0 01 mg L Accuracy pH 0 1 Hardness 0 11 mg L 5 of reading Typical EMC pH 0 1 Deviation Hardness 0 02 mg L Light Source...

Страница 12: ...03 Reagents for 300 pH tests HI 93719 01 Reagents for 100 hardness tests HI 93719 03 Reagents for 300 hardness tests For other accessories see page 48 MEASUREMENT PROCEDURE Turn the meter on by pressi...

Страница 13: ...1 g L Deviation Hardness 0 02 mg L Light Source Light Emitting Diode 555 nm Method For Iron Adaptation of the TPTZ Method The reaction between iron and the reagent causes a blue tint in the sample For...

Страница 14: ...nts for 100 hardness tests HI 93719 03 Reagents for 300 hardness tests For other accessories see page 48 MEASUREMENT PROCEDURE Turn the meter on by pressing ON OFF The meter will automatically default...

Страница 15: ...g Diode 555 nm Method Adaptation of the TPTZ method for iron and PAN method for manganese The reaction be tween iron or manganese and the reagents respectively causes a blue or an orange tint in the s...

Страница 16: ...agents for 150 manganese LR tests For other accessories see page 48 MEASUREMENT PROCEDURE Turn the meter on by pressing ON OFF When the LCD displays it is ready IRON MEASUREMENTS Select the iron param...

Страница 17: ...ution to each cuvet replace the caps and shake gently Place the cuvet with the reacted deion ized water blank into the holder and ensure that the notch on the cap is positioned securely into the groov...

Страница 18: ...add 2 3 drops of Dispers ing Agent HI 93703 51 to each cuvet and swirl until complete dissolution of the turbidity INTERFERENCES Manganese Interference may be caused by Aluminum above 20 mg L Cadmium...

Страница 19: ...iode 555 nm Method For Iron Adaptation of the TPTZ Method The reaction between iron and the reagent causes a blue tint in the sample For pH Phenol red method The reaction be tween pH and the reagent c...

Страница 20: ...E Turn the meter on by pressing ON OFF The meter will automatically default to the pH measurement mode and pH will appear on the left to warn the user When the LCD displays it is ready Refer to the ma...

Страница 21: ...Hardness 0 00 to 2 00 mg L Ca Hardness 0 00 to 2 70 mg L Total Hardness 0 00 to 4 70 mg L Resolution pH 0 1 Fe 1 g L Hardness 0 01 mg L Accuracy pH 0 1 Fe 10 g L 8 of reading Hardness 0 11 mg L 5 of r...

Страница 22: ...0 pH tests HI 93746 01 Reagents for iron LR 100 packets HI 93746 03 Reagents for iron LR 300 packets HI 93719 01 Reagents for 100 hardness tests HI 93719 03 Reagents for 300 hardness tests For other a...

Страница 23: ...measures the pH the Magnesium Mg Calcium Ca and Total Hardness the Free and Total Chlorine Cl2 and Iron Fe contents in water and wastewater SPECIFICATIONS Range pH 5 9 to 8 5 Free Cl2 0 00 to 2 50 mg...

Страница 24: ...ity HI 93710 0 pH Phenol red 5 drops HI 93701 0 Free Cl2 DPD 1 packet HI 93711 0 Total Cl2 DPD 1 packet HI 93746 0 Iron LR TPTZ Reagent 2 packets HI 93719A 0 Hardness Ca Mg indicator 0 5 mL HI 93719B...

Страница 25: ...until the desired parameter is displayed Release the key and when the LCD displays it is ready Refer to the manual pages below to measure the appropriate parameter and for the re quired reagents FREE...

Страница 26: ...o 3 50 mg L Cyanuric Acid 0 to 80 mg L Iodine 0 0 to 12 5 mg L Bromine 0 00 to 8 00 mg L Low Range Iron 0 to 400 g L ppb Resolution pH 0 1 Free Cl2 0 01 mg L Total Cl2 0 01 mg L Cyanuric Acid 1 mg L I...

Страница 27: ...l Cl2 DPD1 indicator 3 drops HI 93701B T Total Cl2 DPD1 buffer 3 drops HI 93701 C Total Cl2 DPD3 solution 1 drop REAGENT SET HI 93701 01 Reagents for 100 free chlorine tests HI 93701 03 Reagents for 3...

Страница 28: ...d reagents FREE CHLORINE MEASUREMENT Cl F will appear on the LCD then see page 34 TOTAL CHLORINE MEASUREMENT Cl t will appear on the LCD then see page 36 pH MEASUREMENT PH will appear on the LCD then...

Страница 29: ...al Cl2 0 00 to 3 50 mg L Cyanuric Acid 0 to 80 mg L Resolution pH 0 1 Cl2 0 01 mg L Cyanuric Acid 1 mg L Accuracy pH 0 1 Cl2 0 03 mg L 3 of reading Cyanuric Acid 1 mg L 15 of reading Typical EMC pH 0...

Страница 30: ...1 T Reagents for 300 total chlorine tests liquid version HI 93710 01 Reagents for 100 pH tests HI 93710 03 Reagents for 300 pH tests HI 93711 01 Reagents for 100 total chlorine tests HI 93711 03 Reage...

Страница 31: ...have to be measured separately with fresh unreacted samples following the above procedure if both values are requested CYANURIC ACID MEASUREMENTS Press SET to select the cyanuric acid scale A will app...

Страница 32: ...Press ZERO and SIP will appear on the display Wait for a few seconds and the display will show 0 0 Now the meter is zeroed and ready for measurement Remove the cuvet and add the content of one packet...

Страница 33: ...inity above 300 mg L and acidity above 150 mg L as CaCO3 require neutralization since the color could instantly fade To resolve this neutralize the sample with diluted HCl or NaOH In case of water wit...

Страница 34: ...Now the meter is zeroed and ready for measurement Remove the cuvet Powder reagents procedure Add the content of one packet of HI 93701 DPD reagent Replace the cap and shake gently Reinsert the cuvet...

Страница 35: ...llowing the above procedure if both values are requested INTERFERENCES Interference may be caused by Bromine Iodine Fluorine Ozone Oxidized manganese and Chromium In case of water with hardness greate...

Страница 36: ...ess ZERO and SIP will appear on the display Wait for a few seconds and the display will show 0 0 Now the meter is zeroed and ready for measurement Powder reagents procedure Remove the cuvet and add on...

Страница 37: ...total chlorine on the Liquid Crystal Display Note Free and total chlorine have to be measured separately with fresh unreacted samples following the above procedure if both values are requested INTERFE...

Страница 38: ...rk with the sample add the con tent of one packet of HI 93722 reagent and stir gently to mix Fill a second cuvet with 10 mL of the reacted sample up to the mark Replace the cap Reinsert the cuvet into...

Страница 39: ...ee cuvets up to the mark with 10 mL of sample each Add 1 drop of HI 93719C EDTA solu tion to one cuvet replace the cap and swirl the solution This is the ZERO1 sample Add 1 drop of HI 93719D EGTA solu...

Страница 40: ...in SIP will appear during measurement then the instrument will display the level of Magnesium hardness in ppm CaCO3 together with n Remove the ZERO2 sample and insert the third cuvet into the instrume...

Страница 41: ...med with hardness free water or the readings will be erroneous A dilution to reduce the level of hardness by a factor of one hundred is performed as follows Fill a 1 mL syringe with the sample Place t...

Страница 42: ...oove Press ZERO and SIP will appear on the display Wait for a few seconds and the display will show 0 0 Now the meter is zeroed and ready for measurement Remove the cap and add the content of one pack...

Страница 43: ...linity above 300 mg L and acidity above 150 mg L as CaCO3 require neutralization since the color could instantly fade To resolve this neutralize the sample with diluted HCl or NaOH In case of water wi...

Страница 44: ...tch on the cap is positioned securely into the groove Press ZERO and SIP will appear on the display Wait for a few seconds and the display will show 0 0 Now the meter is zeroed and ready for measureme...

Страница 45: ...rystal Display Note Note Note Note Note For better accuracy wash glassware with HCl 6N INTERFERENCES Interference may be caused by Cadmium above 4 0 mg L Chromium3 above 0 25 mg L Chromium6 above 1 2...

Страница 46: ...ress ZERO and SIP will appear on the display Wait for a few seconds and the display will show 0 0 Now the meter is zeroed and ready for measurement Remove the cuvet and add 5 drops of the HI 93710 Phe...

Страница 47: ...s readings due to low voltage BA is displayed soon afterwards At this point the meter will completely lockup and will not allow any commands and the display will go blank Battery replacement must only...

Страница 48: ...iodine tests HI 93719 01 100 Mg hardness tests HI 93719 03 300 Mg hardness tests HI 93722 01 100 cyanuric acid tests HI 93722 03 300 cyanuric acid tests HI 93746 01 50 iron LR tests HI 93746 03 150 i...

Страница 49: ...the instrument If under warranty report the model number date of purchase serial number and the nature of the failure If the repair is not covered by the warranty you will be notified of the charges i...

Страница 50: ...in Copper HR HI93702 0 00 to 5 00 mg L Bicinchoninate Cyanide HI93714 0 000 to 0 200 mg L Pyridine Pyrazalone Cyanuric Acid HI93722 0 to 80 mg L Turbidimetric Fluoride HI93729 0 00 to 2 00 mg L SPADNS...

Страница 51: ...cause unacceptable interferences to radio and TV equipments requiring the operator to take all necessary steps to correct interferences Any variation introduced by the user to the supplied equipment m...

Страница 52: ...applications The reference literature currently covers areas such as Water Treatment Process Swimming Pools Agriculture Food Laboratory Thermometry and many others New reference material is constantl...

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