What is the optimum pH for the Hach silica methods 8185 and 8186?

ID documento

ID documento TE791

Data pubblicazione

Data pubblicazione 22/10/2019
Domande
What is the optimum pH for the Hach silica methods 8185 and 8186?
Sommario
pH for silica testing
Risposta
The silica reaction is performed under acidic conditions with the reagents lowering the pH of the sample to a pH of about 2. If the sample is very basic or highly buffered, the reagent may not be able to acidify it. If this is the case,you can neutralize your sample with nitric or hydrochloric acid to a pH of 7, then the reagent should be able to bring it down to a pH of 2.

These method documents can be downloaded through our online copy of the Water Analysis Handbook

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