Lovibond Phenol Red Tablets - 100 tablets

Phenol Red Tablets are used to test the pH levels in your Hot Tub/Swimspa water.

100 Tablets. All Lovibond Tablets have a minimum of 5 years before their expiration date. This gives these tablets the promise of precise dosing, long shelf life and easy handling for customers. 

The water in your Hot Tub/Swimspa should have a pH level between 7.2-7.6. 

Please note: This product is a refill pack for the testing kit. Do not apply directly to water.