Hanna Instruments HI84529 Instruction Manual Download

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INSTRUCTION MANUAL

HI84529

Titratable Acidity

Mini Titrator & pH Meter

for Dairy Products

Summary of Contents for HI84529

Page 1: ...INSTRUCTION MANUAL HI84529 Titratable Acidity Mini Titrator pH Meter for Dairy Products ...

Page 2: ...anna Instruments product Please read this instruction manual carefully before using this instrument This manual will provide you with the necessary information for correct use of this instrument as well as a precise idea of its versatility If you need additional technical information do not hesitate to e mail us at tech hannainst com or view our worldwide contact list at www hannainst com Dear Cus...

Page 3: ... Calibration Procedure 25 11 pH Buffer Temperature Dependence 29 12 Dosing Pump Installation 30 13 Dosing Pump Prime Procedure 31 14 Pump Calibration Procedure 33 15 Titration Procedure 36 15 1 Tips for an Accurate Measurement 39 15 2 View Delete Titrator Recorded Data 39 15 3 Titrator GLP Information 41 16 pH Measurement 42 16 1 View Delete Recorded pH Data 43 16 2 pH Meter GLP Information 44 17 ...

Page 4: ...table acidity in dairy products HI7072 Fill solution 30 mL HI700640 Cleaning solution for milk deposits 20 mL sachet 2 pcs Capillary dropper pipette 1 pc 100 mL beaker 2 pcs Tube set aspiration tube with titrant bottle cap and dispensing tube with tip Dosing pump valve 1 pc 5 mL syringe 1 pc 1 mL syringe with tip 1 pc Stir bar 1 pc Power adapter Instrument quality certificate Instruction manual No...

Page 5: ...nge 20 20 mL or 20 g Low Range 50 50 mL or 50 g High Range 20 20 mL or 20 g Titration method Acid base titration Principle Endpoint titration Pump speed 10 mL min Stirring speed 800 Low Range 1000 High Range Log data Up to 200 samples pH Meter Range 2 0 to 16 0 pH 2 00 to 16 00 pH Resolution 0 1 pH 0 01 pH Accuracy 0 01 pH Calibration 1 2 or 3 point calibration 4 available buffers 4 01 6 00 8 30 1...

Page 6: ...eference electrode Temperature Probe HI7662 M Environment 0 to 50 C 32 to 122 F max 95 RH non condensing Power Supply 12 Vdc power adapter Dimensions 235 x 200 x 150 mm 9 2 x 7 9 x 5 9 Weight 1 9 kg 67 0 oz Required Reagents HI84529 50 Titrant Low Range 20 HI84529 51 Titrant High Range 20 HI84529 52 Titrant Low Range 50 HI84529 55 Pump calibration standard ...

Page 7: ...e to display the titration data Data can be stored using the log feature and then exported to a USB stick or transferred to a PC using the USB connection Log on demand for up to 400 samples 200 mV pH measurements 200 for titration results GLP feature to view calibration data for the pH electrode and pump Significance of Use Titratable acidity can be expressed in several units lactic acid l a degre...

Page 8: ...AOAC International and Standard Methods for the Examination of Dairy Products Both of these methods report titratable acidity as lactic acid a rough conversion factor can be used to convert the results to the other available units From To Divide by l a SH 0 0225 l a D 0 0100 l a TH 0 0090 The HI84529 can be customized to meet the needs of any dairy analysis lab Samples can be titrated by weight or...

Page 9: ...s issue by titrating to a fixed pH endpoint that can be set by the user The HI84529 can be customized to meet individual needs with samples titrated by mass or by volume in two different ranges with diluted and non diluted low range only For precise analysis the sample size volume of titrant added and titrant concentration must be known TheHI84529TitratableAcidinDairyProductsMiniTitratorutilizesas...

Page 10: ...sing pump valve 2 Aspiration tube 3 Syringe 4 Titrant bottle 5 Dispensing tube 6 Reference electrode 7 Temperature probe 8 pH electrode 9 Electrode holder Top View 1 4 6 5 2 3 1 Titrant bottle 2 Dispensing tube 3 Electrode holder 4 Liquid Crystal Display LCD 5 Functional keys 6 Keypad ...

Page 11: ...ain screen In Setup exits a parameter without changing the value Press ARROW keys to modify the parameters values to scroll the information displayed while viewing a help screen or to move between the options from the instrument s Setup Press CAL key to access the Electrode and Pump calibration options Press HELP key to access exit the instrument s contextual help Press LOG key to save the current...

Page 12: ...rer running blinks when stirrer is not working properly Pump running Unstable reading Parameter can be modified Dosing Pump The dosing pump is based on a valve that automatically moves the titrant between the titrant bottle and syringe when filling the syringe and between the syringe and sample when dispensing A replaceable 5 mL plastic syringe is used to limit the amount of titrant used per test ...

Page 13: ... the instrument Connect the temperature probe to the instrument Calibrate the pH electrode Connect the tubes and the valve See DOSING PUMP INSTALLATION section for the procedure Remove the titrant bottle cap and replace it with the bottle cap with tubes Place the titrant bottle in the appropriate place on the titrator top Note Different titrants are required based on the concentration See PUMP CAL...

Page 14: ...roll the setup parameters Press HELP to view the contextual help Press ESC to return to the main screen Concentration Unit l a SH D or TH Press the corresponding virtual option key to change the option l a lactic acid SH Soxhlet Henkel D Dornic TH Thörner Acidity Titration Low 20 Low 50 or High 20 Press the corresponding virtual option key to select the desired range Note Different titrants are re...

Page 15: ... to return to the setup menu without saving the changes pH Resolution 0 1 or 0 01 Press the displayed virtual option key to change the option Temperature Unit C F or K Press the virtual option key to change the option Time Press the Modify key to change the time and time format Press Format to switch between 12 hour am pm and 24 hour mode Press to highlight the value to be modified Use the ARROW k...

Page 16: ...le to activate or Disable to deactivate the Key Beep function If enabled a short beep will be heard every time a key is pressed Error Beep Select Enable to activate or Disable to deactivate the Error Beep function If enabled a beep will be heard when an error condition occurs Decimal Separator This option allows the user to select the symbol used for a decimal separator LCD Contrast This option is...

Page 17: ...default value is 3 Use the ARROW keys or to increase decrease the backlight level Press Accept to confirm or ESC to return to the setup menu pH Endpoint Press Modify to change the pH endpoint value The default value is 8 3 pH Use the ARROW keys to select the value Press Accept to confirm or ESC to return to the setup menu without saving the changes Language The only available language is English ...

Page 18: ...Select to view the firmware version language version mV factory calibration date and time and temperature factory calibration date and time Press ESC to return to the setup menu Restore Factory Settings Press Select to restore the factory settings Press Yes to confirm the restore process or No to return without restoring Press ESC to return to the setup menu ...

Page 19: ... screen when a titration is in progress Prime burette screen Prime burette screen when the dosing system is running This error message appears when the pump is not working properly Check the tubing valve and syringe Press Restart to try again This screen appears when the titrator is in calibration mode Press Pump to calibrate Pump Press Electrode to calibrate pH electrode ...

Page 20: ...ximum amount of titrant is exceeded Check standard electrode and or dosing system and try again The calibration was outside the acceptable limits Prepare a new standard and try again This error message appears when the pH reading exceeds the acceptable input limits 2 00 pH 16 00 This screen appears when the stirrer is not working properly Check the stir bar and beaker content Press Restart to try ...

Page 21: ...t the calibration or Clear to restore the default calibration The Wrong Buffer message is displayed when the pH value is outside of the acceptable range Clean the electrode by following the Cleaning Procedure and or check the buffer concentration before continuing the pH calibration Press the ESC key to exit pH calibration mode ...

Page 22: ...to start another titration or ESC to return to the main screen This error message appears when the input reading pH or temperature exceeds the specified limits The pH or temperature value and concentration will blink indicating an error This screen appears when the sample concentration is out of range This screen appears when the stirrer is not working properly Check the stir bar and beaker conten...

Page 23: ...ner stern with deionized water making certain to wet o ring found on the inner stern Reassemble reference electrode by gently pushing the inner assembly into the outer body from the bottom slide spring and cap down the cable and over the top of the inner stern Screw the cap into place Unscrew and remove the fill hole plug and o ring on fill hole spout Using the dropper pipette provided add a few d...

Page 24: ...rument Rinse the pH and reference electrodes with distilled or deionized water Immerse the pH and reference electrodes 1 5 cm 0 6 in the sample and stir gently for a few seconds For a faster response and to avoid cross contamination of the samples rinse the electrodes with a few drops of the solution to be tested before taking measurements ...

Page 25: ...on Pour small quantities of selected buffer solutions into clean beakers For accurate calibration use two beakers for each buffer solution the first one for rinsing the electrode and the second one for calibration Put a magnetic stir bar in the beaker that will be used for calibration Remove the protective cap and rinse the electrode with some of the buffer solution to be used for the first calibr...

Page 26: ...electrode holder with electrodes from the top of the beaker Place the second beaker with calibration buffer in the beaker holder Rinse the electrodes in a beaker containing the second buffer rinsing solution Place the electrode holder with electrodes on the top of the beaker and secure it by turning clockwise and press STIR If necessary press the ARROW keys in order to select a different buffer va...

Page 27: ...e to the selected buffer the unstable measurement symbol will disappear and the Confirm key will become active Press Confirm to confirm the calibration The instrument stores the calibration value and returns to calibration menu where the date and time for the pH calibration will be updated Note A buffer confirmed during the calibration process is removed from the list of available buffers Error Me...

Page 28: ...current calibration point The instrument will keep all the confirmed values during the current calibration If the temperature reading is out of the defined temperature range of the buffer 0 to 45 C the Wrong Buffer Temperature error message will be displayed and the temperature symbol will blink on the display Calibration cannot be confirmed in this situation Notes To clear a previous calibration ...

Page 29: ...ally calibrate to the pH value corresponding to the measured or set temperature TEMP pH BUFFERS ºC ºF 4 01 6 00 8 30 10 01 0 32 4 01 6 12 8 48 10 32 5 41 4 00 6 09 8 44 10 24 10 50 4 00 6 06 8 41 10 18 15 59 4 00 6 04 8 37 10 12 20 68 4 00 6 02 8 33 10 06 25 77 4 01 6 00 8 30 10 01 30 86 4 02 5 99 8 27 9 96 35 95 4 03 5 98 8 24 9 92 40 104 4 04 5 97 8 21 9 88 45 113 4 05 5 97 8 18 9 85 During cali...

Page 30: ... on the top of the meter 4 Arrange the bottom of the syringe into the pump holder Once the syringe is in place lower the barrel until it sits flush on the holder 5 Put the o ring and syringe fixing nut over the syringe Turn clockwise to secure it in place 9 8 7 6 Front view 6 Place the valve on top of the syringe Ensure it fits securely 7 Insert the aspiration tube into the valve left side 8 Repla...

Page 31: ...starting a set of titrations Two rinse cycles of the syringe are shown in the figure below The dispensing tube is connected to the top of the valve and the aspiration tube on the left side Notes The aspiration tube must be inserted in the titrant bottle The dosing tip must be placed over a rinse beaker Before starting the prime procedure make sure the appropriate titrant solution is used for the s...

Page 32: ...mended to ensure that the air bubbles are completely removed To pause the prime process press the Pause key to continue press the Continue key To stop the prime process press the Stop key Note This error message appears when the pump is not working properly Check the tubing valve and syringe Press Restart to try again ...

Page 33: ...e electrode has been calibrated in 8 30 pH buffer Ensure the pump is primed with the correct titrant for the selected range HI84529 50 Low Range 20 Titrant or HI84529 52 Low Range 50 Titrant HI84529 51 High Range 20 Titrant Sample preparation Use a clean pipette add a precisely measured amount of HI84529 55 Calibration Standard to a clean beaker as indicated below Low Range 20 1 mL Low Range 50 2 ...

Page 34: ...e them roughly 1 5 cm 0 6 into the sample Be sure that the tip of the electrode is not hitting the stir bar If necessary additional distilled or deionized water can be added Insert the dosing tip into the titrant tube sleeve It is critical that the tip be immersed approximately 0 25 cm 0 1 into the solution being titrated Press Continue to begin the calibration and Stop to abort it At the end of t...

Page 35: ...emperature probe and dosing tip and try again If the calibration doesn t complete and the max titrant volume of titrant is reached an error message will be displayed The calibration can be restarted by pressing Restart Prepare a new standard rinse electrode temperature probe and dosing tip and try again This error message appears when the pH reading exceeds the acceptable input limits 2 00 pH 16 0...

Page 36: ...to 2 0 SH 0 4 to 8 9 4 4 to 88 9 D 1 0 to 20 0 10 to 200 TH 1 1 to 22 2 11 1 to 222 2 By Mass Place a clean 100 mL plastic beaker on an analytical balance Zero the balance Add 20 1 g Low 20 High 20 or 50 1 g Low 50 to the beaker Record the reading once it has stabilized Remove the beaker from the balance By Volume Volumetrically add 20 mL Low 20 High 20 or 50 mL Low 50 to a clean 100 mL plastic be...

Page 37: ...e probe with deionized water and immerse it roughly 1 5 cm 0 6 into the sample Be sure that the tip of the electrode is not hitting the stir bar Insert the dosing tip into the titrant tube sleeve It is critical that the tip be immersed approximately 0 25 cm 0 1 into the solution being titrated Press Continue to begin the titration and Stop to abort it The instrument will continuously update the co...

Page 38: ...ry A message will be displayed for a few seconds indicating the amount of free log space Up to 200 log samples can be recorded in the instrument s memory Press Restart to begin a new titration or ESC to return to the titration menu If the concentration exceeds the range limits 0 01 l a for Low Range 2 0 l a for High Range the exceeded range limit will be displayed blinking Another titration can be...

Page 39: ...ng titrated approximately 0 25 cm Calibrate the pump prior to each series of titrations Calibrate the pump if the meter is left idle for several hours Analyze the sample immediately after it is obtained Clean the electrode with HI70640 cleaning solution specially designed for milk industry 15 2 VIEW DELETE TITRATOR RECORDED DATA Press MENU then Recall to access the Titrator logs When an external U...

Page 40: ...is connected the Export key is displayed It saves the titration curve data as a text file on the storage device using the displayed file name Use the ARROW keys when is displayed to scroll between the log records Press ESC to return to the previous screen Press Plot to visualize the titration curve or ESC to return to the previous screen On the titration curve the endpoint volume and pH are displa...

Page 41: ...umber the list of records If the titrator log is empty the message No records available will be displayed 15 3 TITRATOR GLP INFORMATION Press MENU then GLP From this screen it is possible to select the Electrode or the Pump GLP Press Pump to view the pump s last calibration time date and slope for the selected range If a calibration hasn t been performed the message Not Calibrated will be displaye...

Page 42: ...s MENU to access the instrument s menu Press HELP to view the contextual help whenever you need additional information Press STIR to start stop the stirrer Press Titrator to enter titration mode Press CAL to access the calibration menu Press LOG to save the current reading A message indicating the free log space will be displayed for a few seconds In order to take pH measurements follow the next s...

Page 43: ...s desired the temperature probe must be disconnected from the instrument The default temperature of 25 C 77 F or the last temperature reading will be displayed preceded by the symbol and the MTC message The temperature can be adjusted with the ARROW keys from 20 0 to 120 0 C 16 1 VIEW DELETE RECORDED pH DATA Press MENU key while in pH meter screen then Recall to access the meter logs When an exter...

Page 44: ... available will be displayed 16 2 pH METER GLP INFORMATION The pH meter GLP screen displays the pH calibration data To view this information press MENU key while in pH meter mode then GLP Press Electrode to view information regarding electrode calibration The following items are included in electrode GLP the time and date of the last calibration offset slope electrode condition calibration timeout...

Page 45: ...urther analysis on a PC The logged data can also be transferred from the instrument to the PC using a USB cable Connect the USB cable and the following screen will be displayed Press Meter to generate the text file with Meter log data Press Titrator to generate the text file with Titrator log data Press Plot to generate the text files with Titration Plots The generated files are now visible and ca...

Page 46: ...eposits Soak in Hanna Instruments HI70640 Cleaning solution for milk deposits for approximately hour pH half cell only Protein Soak in Hanna Instruments HI7073 or HI8073 Protein cleaning solution for 15 minutes Important After performing any of the cleaning procedures rinse the electrode thoroughly with distilled or deionized water and soak the electrode in HI70300 or HI80300 Storage solution for ...

Page 47: ...Broken pump tubing Wrong or contaminated pump calibration solution Broken pH electrode Verify tubing valve syringe are intact and solution passes when pump is primed and no air bubbles are present Check the pump calibration solution Verify electrodes are calibrated Prepare another standard prime the pump and restart the calibration The meter does not accept the pH buffer solution for calibration B...

Page 48: ...endor Stirrer error message is displayed at the end of pump calibration or titration Check the stir bar and beaker content If the error persists contact the vendor Non spinning stirrer icon blinking in pH calibration and meter mode Check the stir bar and beaker content If the error persists contact the vendor Pump error message is displayed Check the tubing valve and syringe If the error persists ...

Page 49: ...ILL SOLUTION HI7072 Reference electrode fill solution 30 mL 4 pcs ELECTRODE STORAGE SOLUTION HI70300L Storage solution 500 mL CLEANING SOLUTIONS HI70640L Cleaning solution for remaining milk deposits 500 mL HI70641L Cleaning and disinfecting for dairy products 500 mL HI70642L Cleaning solution for remaining cheese deposits 500 mL HI7077L Electrode cleaning solution for oils 500 mL OTHER ACCESSORIE...

Page 50: ...nt s safety do not use or store the instrument in hazardous environments WARRANTY HI84529 is warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions Electrodes and probes are warranted for a period of six months This warranty is limited to repair or replacement free of charge Damage due to accidents misuse tam...

Page 51: ...Hanna Instruments reserves the right to modify the design construction or appearance of its products without advance notice ...

Page 52: ...World Headquarters Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com MAN84529 Printed in ROMANIA ...

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