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

Document ID

Document ID TE7097

Published Date

Published Date 27/05/2017
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 (Catalog Number/Order Code 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 (Catalog Number/Order Code PHC28101), IntelliCAL™ PHC725 RED ROD pH Electrode for Low Ionic Strength Samples (Catalog Number/Order Code PHC72501), and IntelliCAL™ PHC735 RED ROD pH Electrode for Dirty Samples (Catalog Number/Order Code PHC73501).