Water-ID - PoolLab Phenol Red pH Reagent Tablets - Pack of 50 - TbsPpH50

Water-ID – Phenol Red pH Reagent Tablets – Pack of 50

These genuine Water-ID Phenol Red tablets are photometer-grade reagents for measuring the pH level of pool and spa water across the range of 6.5–8.4. Each tablet dissolves rapidly in a water sample, producing a characteristic colour change that is read precisely by a compatible PoolLab photometer. Keeping pH in check is one of the most important routine tasks for any pool owner or technician, directly affecting swimmer comfort, disinfectant efficiency, and equipment longevity.

Why pH Matters in Pool Water

pH governs how effectively chlorine and other disinfectants work: at values above 7.6, disinfection slows significantly and bacteria are killed less rapidly, while values below 7.0 promote the formation of chloramines that irritate mucous membranes and cause unpleasant odours. Low pH also accelerates corrosion of metal fittings and surfaces, while high pH can trigger calcium precipitation and begin to break down the skin’s natural protective barrier. Regular, accurate pH testing is therefore essential for safe, balanced water.

Compatibility

These tablets are designed specifically for use with the Water-ID PoolLab 1.0 and PoolLab 2.0 photometers. Simply collect a water sample in the test vial, drop in one Phenol Red tablet, allow it to dissolve completely with gentle agitation, and insert the vial into the PoolLab photometer for an instant digital pH reading. The tablets are individually blistered in aluminium push-through blister packs (10 tablets per blister), protecting each tablet against moisture and contamination for consistent performance throughout the stated shelf life.

Genuine Water-ID Quality

Manufactured by Water-i.d. GmbH in Germany, these are OEM reagent tablets calibrated to the PoolLab photometer’s optical system. Using genuine Water-ID consumables ensures the photometer’s pre-programmed calibration curves remain valid and results stay traceable — a key requirement for professional water management and record-keeping. Replace your tablet stock before expiry to maintain measurement accuracy.