Does Hach sell a pH Ionic Strength Adjustor (ISA) solution?

Document ID

Document ID TE7097

Version

Version 3.0

Status

Status Published

Published Date

Published Date 07/10/2018
Question
Does Hach sell a pH Ionic Strength Adjustor (ISA) solution?
Summary
pH ISA solution
Answer
Hach does not offer a specific pH ISA solution; however, this application note, pH Measurement in Low-Ionic Strength (Pure) Samples, discusses adding 100 mg KCl crystals to 100 mL sample to adjust the ionic strength. The KCl Crystals (Radiometer Analytical), 15 g (Product # S21M001) can be used for this purpose.

Hach also offer probes that are more well suited for low ionic strength (LIS) samples such as the IntelliCAL™ PHC281 pH Ultra Refillable pH Electrode (Product # PHC28101), IntelliCAL™ PHC725 RED ROD pH Electrode for Low Ionic Strength Samples (Product # PHC72501), and IntelliCAL™ PHC735 RED ROD pH Electrode for Dirty Samples (Product # PHC73501). 

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