Pooltester Refill Tablets Pack of 200 100 x DPD1 for Free Chlorine & Bromine + Phenol Red pH Value Rapid Water Test Pool, Whirlpool Spa Suitable Shake Testers

200-piece combination refill pack: contains 100 x phenol red tablets for measuring the pH value and 100 x DPD1 tablets for measuring free chlorine/bromine. The perfect pool accessory for regular pool care and crystal clear water. For all common shake testers: Universally suitable as a refill pack for manual pool testers with visual colour matching, which use DPD1 and Phenol-Red tablets. Better than test strips: In contrast to classic pool test strips, reagent tablets in the aluminium blister are significantly longer durable and perfectly protected from moisture. In addition, the test kit with colour scale allows a much more precise and clear evaluation of your water values. FAST RAPID FORMULA: The reagent tablets dissolve particularly quickly in water and allow easy, seconds colour matching on the test scale of your pool testers. Securely sealed in an aluminium blister: each tablet is individually protected against air and moisture in an aluminium blister pack. This reliably protects the reagent tablets from environmental influences and allows a long shelf life of up to 10 years from the date of production. Ideal for pool, whirlpool and spa: suitable for regular control of water quality in swimming pool, whirlpool, spa or paddling pool - an indispensable companion, especially during the intense pool season. ⚠️ NOT SUITABLE FOR PHOTOMETERS: These Rapid tablets are intended exclusively for classic shake testers with visual colour scale. For digital or electronic pool testers / photometers (such as PoolLab, Scuba or similar devices) special "photometer" tablets are required.