Total Alkalinity: 0, 40, 80, 120, 180, 240, 360 ppm
pH: 6.0, 6.4, 6.8, 7.2, 7.6, 8.2, 9.0
Packaging: bottle of 50 test strips
3in1 Pool Check has been specially designed for users who run alternative sanitizer systems that require low levels of chlorine. Engineered using our patented aperture design, 3in1 Low Chlorine Pool Check fills the gap where other test strips leave off.