Hach Polymetron 9610sc

Questions and Answers:

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Melissa BaileyAug 22, 2025
Why is the Hach Measuring Instruments reading high?
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  Jeffrey LeeAug 23, 2025
  High readings on Hach Measuring Instruments can stem from these issues: * A leak in a reagent delivery valve. Perform the diagnostic test for reagent delivery valves and replace any leaking valves. * The quantity of reagent supplied to the sample cell is incorrect. Perform the diagnostic test for reagent delivery, and if incorrect, check for blockages in the tubing or replace the solenoid valve. * The reagent blank value in the REAGENTS/STANDARDS menu does not match the value on the R1 (molybdate reagent) bottle. Correct the reagent blank value in the menu to match the bottle. * There is a blue stain on the sample cell. Replace the sample cell and use the reagent set with the modified R2 (citric acid) reagent.
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reynoldsdianaSep 3, 2025
What to do if the reagent pressure is low in Hach Measuring Instruments?
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  Misty JarvisSep 4, 2025
  Low reagent pressure in Hach Measuring Instruments can be due to: * A bottle cap not being on tightly or not creating a good seal. Remove the bottle caps, clean the bottle rims, check the inner surfaces of the caps, and fully tighten the caps, ensuring the fittings are also tight. * A leak or bad seal in one of the reagent bottles or tubes. Complete the diagnostic test for low reagent pressure.
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Johnny BlackNov 10, 2025
Why does my Hach Measuring Instruments show a calibration error?

General

Parameter	Silica, Phosphate, Free Chlorine
Measurement Method	Colorimetric
Operating Temperature	5 - 45 °C
Power Supply	100 - 240 VAC, 50/60 Hz
Resolution (Free Chlorine)	0.01 mg/L
Accuracy (Silica)	±5% of reading or ±5 µg/L, whichever is greater
Cycle Time	5 minutes
Response Time	Typically within cycle time
Sample Temperature	5 - 40 °C
Sample Flow Rate	0.1 - 0.5 L/min
Outputs	4-20 mA