DUKE pH drop test kit

Know your water before making an adjustment

A DUKE drop tester is a practical aid for pool owners who want to base water care on measured values. Instead of judging water only by its appearance, you obtain a result to compare with the tester’s colour scale. Regular checks make maintenance decisions easier and help you follow changes during normal pool use. Always use the particular tester for the parameter it is designed to measure.

A straightforward part of regular pool care

Manual drop testing is useful for routine checks and as a complement to other measuring equipment. With your own tester available at the pool, you can check the water before adding a treatment, after the water has mixed or when investigating an unexpected result. Follow the same procedure each time so that successive measurements can be compared meaningfully. Keep the test equipment together so that the correct scale and reagent are used.

Choose the tester for the parameter you need

The parameter and measuring range matter more than similar-looking packaging. Chlorine, pH and copper testers serve different purposes. A result for one parameter cannot replace a measurement of another. With a combined kit, follow the procedure for each test separately and distinguish the reagents carefully. The specific capabilities of this version are described in the measurement information and instructions below.

A readable result starts with the right procedure

A clean test vessel, the prescribed sample volume and the correct amount of reagent are essential for a usable result. Compare colours in suitable light and keep to the specified reading time. If the colour falls outside the scale or the result is unexpected, check the procedure and repeat the test. Do not interchange reagents from different testers or rely solely on the previous reading. Store the tester carefully between uses.

Testing pool water

The kit measures pool water pH from 6.2 to 8.5. It does not measure chlorine.

Take the sample before adding chemicals, away from the dosing point. Use the sample volume and reagent quantity specified in the included instructions, then compare the colour in the shade. Rinse the sample container afterwards and store reagents in a cool, dark place.