Description
Total Hardness Testing Measuring Range: 0-425ppm
Easy to use:
Immerse the strip for 2 second and then remove the strip
Do not shake excess water off,and then hold the strip horizontally for 15 second
Compare against the color chart and read immediately
Use occasion:
ideal for water filtration systems, fish tanks, swimming pools, spas, well water, fresh water and salt water pools
Note:
1se remenber close the lid soon after you take strips out
2se keep it in dark and dry place
3 tests out of reach of children or pets