DSC_9536

Reading pH levels as indicated on the side of the bottle from which the test strips are taken.

Tags: turbidity, watertesting, qinghai, shem, china, scotgfrank, petrifilm, shemgroup, scot, colilert, scotfrank, water, waterquality, afsdxvrzoomnikkor18200mmf3556gifed
Uploaded: March 8, 2009
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