PoolLab Phenol Red (pH) Tablets are a reliable and convenient solution for accurately measuring the pH levels in swimming pools, spas, and other water systems. Designed for use with PoolLab 1.0 & 2.0 Photometer, these tablets ensure precise pH readings to help maintain optimal water quality and balance. The tablets are packaged in an effective way so they are protected against moisture and contamination, ensuring a long shelf-life and consistent performance. Key Features: High accuracy Easy to use Rapid dissolution Reliable and consistent Compact packaging Ideal for use in: Swimming pools Spas and hot tubs Water treatment facilities Educational use Usage Instructions: Sample Collection: Collect the water sample in a clean test vial or container. Adding Tablet: Add one PoolLab Phenol Red (pH) Tablet to the water sample. Dissolution: Allow the tablet to dissolve completely, which occurs rapidly with gentle agitation. Measurement: Place the test vial in the PoolLab photometer to measure the pH level indicated by the color change. Available in pack size of 50 & 250 TbsPpH50: 50 pack TbsPph250: 250 pack