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Hach ISEF121 Series, User Manual

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Table of Contents

2

Summary of Contents for ISEF121 Series

Page 1: ...DOC022 53 80028 ISEF121 05 2021 Edition 5 User Manual ...

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Page 3: ...on 5 5 1 Calibration notes 5 5 2 Calibration procedure 6 Section 6 Sample measurement 7 6 1 Sample measurement notes 7 6 2 Sample measurement procedure 7 6 3 Low level measurements 8 6 4 Interferences 8 Section 7 Verify the calibration 9 7 1 Verification procedure 9 Section 8 Maintenance 10 8 1 Clean the probe 10 8 2 Storage 10 Section 9 Troubleshooting 11 9 1 Slope check 12 9 2 Standard additions...

Page 4: ...Table of Contents 2 ...

Page 5: ...Probe type Digital combination probe with a non refillable reference junction and a built in temperature sensor Measurement range 0 01 mg L 5x10 7 M to 19 000 mg L 1 M F Accuracy 0 02 mV or 0 05 the larger value Sample pH range pH 4 to 8 must be pH 5 0 to 5 5 after the addition of Fluoride ISA Reference type Ag AgCl Reference junction Single junction annular porous PTFE Slope 59 mV pF 90 to 110 at...

Page 6: ...ard information D A N G E R Indicates a potentially or imminently hazardous situation which if not avoided will result in death or serious injury W A R N I N G Indicates a potentially or imminently hazardous situation which if not avoided could result in death or serious injury C A U T I O N Indicates a potentially hazardous situation that may result in minor or moderate injury N O T I C E Indicat...

Page 7: ...t time or after battery replacement 5 Connect the probe to the meter Section 5 Calibration The procedure that follows is applicable to meters that can connect to Intellical ISE probes Refer to the applicable meter documentation for meter operation and probe specific settings 5 1 Calibration notes Read the notes that follow before calibration Use plastic containers during calibration and measuremen...

Page 8: ...to the first standard solution Put the standard solution on an electromagnetic stirrer Stir at a moderate rate 5 Rinse the probe with deionized water Dry the probe with a lint free cloth 6 Put the probe in the standard solution with the sensor fully submerged Do not put the probe on the bottom or sides of the beaker 7 Shake the probe from side to side to remove air bubbles 8 Stir for 30 to 60 seco...

Page 9: ...sary enter a sample ID and operator ID before measurement Refer to the meter manual for instructions Stir the standards and samples at a slow and constant rate to prevent the formation of a vortex The meter automatically saves the measurement data when the user manually reads each data point and when the meter is set to read at regular intervals The user must manually save each data point when the...

Page 10: ...5 mL of standard solution or sample Note The ISA is not necessary when all of the conditions that follow apply The sample does not contain interferences The sample pH is within the range given in the specifications Omission of the ISA is accepted by the regulatory reporting agency if the measurement is for regulatory reporting 6 4 Interferences The sensing element will measure some other ions that...

Page 11: ... pH 8 Section 7 Verify the calibration Measure the value of a fresh standard solution at regular intervals to make sure the result is accurate The meter compares the expected standard solution value to the measured value and accepts or rejects the measurement The user can change the standard solution and acceptance criteria for verification in the probe specific settings Note Password protection m...

Page 12: ...obe 1 Rinse the probe with deionized water Dry the probe with a lint free cloth 2 Clean the sensing element as follows a Lightly polish the sensing element with a small quantity of plain fluoride toothpaste no teeth whiteners or abrasives Use a circular movement and polish until the sensing element is clean b Fully rinse with deionized water c Soak the probe in isopropyl alcohol for 30 minutes d R...

Page 13: ...sure that the sample pH after the ISA is added is between 5 0 and 5 5 Make sure to add one ISA pillow to each 25 mL of sample The sample temperature is low or there is a large temperature difference between samples Increase the sample temperature or adjust the temperature of different samples to be the same within 2 C 3 6 F Procedure problem causes slow stabilization and prevents accurate calibrat...

Page 14: ...of standard solution to the sample Refer to Table 3 Table 3 Standard solution volumes and concentrations Measured sample concentration Volume of standard to add Concentration of standard solution 1 to 2 mg L 0 5 mL 100 mg L F 3 to 6 mg L 1 0 mL 100 mg L F 7 to 15 mg L 0 3 mL 1000 mg L F 15 to 30 mg L 0 5 mL 1000 mg L F 30 to 60 mg L 1 0 mL 1000 mg L F 3 Measure the concentration of the spiked samp...

Page 15: ...d Solution 2 mg L as F 500 mL 40520 Fluoride Standard Solution 5 mg L as F 500 mL 2797149 Fluoride Standard Solution 10 mg L as F 500 mL 35949 Fluoride Standard Solution 100 mg L as F 500 mL 23249 Wash bottle polyethylene 500 mL 1 62011 Disposable wipes 11 x 22 cm 280 pkg 2097000 Beaker 30 mL plastic colorless 80 pkg SM5010 Beaker 100 mL polypropylene 1 108042 Probe stand for standard Intellical p...

Page 16: ...14 English ...

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Page 18: ...2932 orders hach com www hach com HACH LANGE GMBH Willstätterstraße 11 D 40549 Düsseldorf Germany Tel 49 0 2 11 52 88 320 Fax 49 0 2 11 52 88 210 info de hach com www de hach com HACH LANGE Sàrl 6 route de Compois 1222 Vésenaz SWITZERLAND Tel 41 22 594 6400 Fax 41 22 594 6499 Hach Company Hach Lange GmbH 2010 2011 2013 2021 All rights reserved ...

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