Measures Iron from 0 to 5 ppm and Copper from 0 to 3 ppm.   

Suitable for drinking and pool water applications. 25 strips per vial.

Measures pH from 4 to 10 ppm and Total Chlorine from 0 to 50 ppm.   

Suitable for drinking, food/beverage and pool water applications. 50 strips per vial.

Measures Nitrate from 0 to 50 ppm and Nitrite from 0 to 10 ppm.   

Suitable for drinking water application. 50 strips per vial.