The Insta-TEST® Low Range Hardness test strips are a convenient way to test Hardness levels in water for fast results. Range and sensitivity is 0, 30, 60, 120, 180 ppm.
The Insta-TEST® Low Range Hardness test strips are a convenient way to test hardness levels in water for fast results. Range and sensitivity is 0, 30, 60, 120, 180 ppm.