Phenol Red plates for measuring ph in pool water.
One plate contains 10 tablets.
Measures the pH value in pool water.
For manual measurement.
Best selling measurement...
DPD No.3 plates for measuring total chlorine. If you don't know whether to choose DPD No.1 or No.3, then choose No.1, the standard tester measures free chlorine.
One plate...
"Alkalinity (M) tablets for measuring alkalinity. One plate contains 10 tablets.
When the alkalinity is too high, the ph is very stable and difficult to decrease; when the...