HydroTools by Swimline Chlorine Test Oto/Phenol Red Solutions jewerly This handmade Terra Cotta Article

This handmade Terra Cotta Article with the pressed logo

soon to be

you can have both the religious and decorative sides of this item

Size: 7" x 6″

HydroTools by Swimline Chlorine Test Oto/Phenol Red Solutions jewerly This handmade Terra Cotta ArticleHydroTools by Swimline Chlorine Test Oto Phenol Red Solutions is a pool water testing kit that includes both OTO (Orthotolidine) and Phenol Red solutions. The OTO solution is used to test for chlorine levels in the pool water. The solution turns yellow when chlorine is present and the deeper the color, the higher the chlorine level. The Phenol Red solution is used to test for pH levels in the pool water. The solution turns red when the pH level is