4 in1 Pool Check® provides solution for the demanding swimming pool & spa owner who is concerned with proper swimming pool & spa maintenance.

Utlizes Safe Chemistry, rather with the messy drop-count liquide with spills and crushing tablets. The Free Chlorine is based on TMB chemistry, approved by USEPA. The Free Chlorine test pad is resitant to high level of chlorine from bleaching

With high safety quality and easy to use with simple dip and stroke, and reading colour from the block-chart within 1 minute, appeals to many Swimming Professionals.

Detection Ranges:

1. Free Chlorine: 0, 0.5, 1, 3, 5, 10 ppm (mg/L)
2. Total Chlorine: 0, 1, 3, 6, 9, 12, 20 ppm (mg/L)
3. Total Alkalinity: 0, 40, 80, 120, 180, 240, 360 ppm (mg/L)
4. pH: 6.0, 6.4, 6.8, 7.2, 7.6, 8.2, 9.0

Packing Size

50 Test Strips / bottle

Detais of Chemicals Requirement under "Download"  please refer to link: 

http://www.proactchemicals.com/productdetails.php?pid=85