This refill is intended for the JBL PROAQUATEST pH 7.4–9.0 test. It is designed to accurately measure pH in alkaline environments, particularly suitable for marine aquariums, African biotopes, and ponds.
Fill the test tubes with the water to be tested, add the pH reagent to the designated test tube, place the test tubes in the comparator, then read the value obtained on the color chart.
Refill compatible with the JBL PROAQUATEST pH 7.4–9.0 kit. The refills allow for extended use of the test without replacing the entire kit.