20ml "POL20TH1"

Introducing the PoolLab Liquid Reagents Total Hardness Reagent, available in a convenient 20 ml size. This high-quality reagent is specifically designed for precise total hardness measurement using photometers. Perfect for pool and spa water analysis, it delivers accurate and dependable results with each test. Ideal for professional use, this reagent provides the essential tools required to maintain optimal water quality efficiently.