How should the pH of samples for BOD testing be checked?
The original, undiluted sample must be checked to determine whether the natural pH is outside the range at which a natural population of microrganisms would be expected to be viable. If pH of the original sample is outside of this range, pH adjustnment of the original sample and seeding of any sample dilutions is required. Can you use pH paper? Yesprovided its narrow range (vs. 1-14). We need paper that covers the range from 6 to 9.
