Re: RO units

R Britt (
Tue, 5 Apr 1994 13:24:19 -0700 (PDT)

> What's a good, inexpensive way to test water quality? What agency or
> whatever does one call?
The standard way is to measure conductivity, which of course is related to
the ion concentration. I think a reasonable conductivity meter for water
purity measurements should be quite inexpensive.