This refill is intended for the JBL PROAQUATEST pH 3.0–10.0 test. It reliably measures the pH value over a wide range, suitable for both freshwater and marine aquariums, as well as ponds.
Fill the test tube with the water to be tested, add the pH reagent, then compare the obtained coloration with the provided color chart to determine the pH value.
Refill including the pH 3.0–10.0 reagent, compatible with the corresponding JBL PROAQUATEST kit.