James wrote:

> Would the ISA method work with a meter that reads only to tenths?

It will work regardless of the resolution of instrument. 

The link below is to the Orion Research web site. They manufacture pH meters 
and other scientific equipment. This link is to a section titled "pH Theory and 
Practice" and contains a section on pure water testing.

http://www.orionres.com/ionguide/english/Ion12eng.html


frank key


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