Measure total hardness from 300
down to less than 4 ppm, or from 18 down to less than 0.2 grain/gal. Dual
sensitivity scales make the reading of color blocks easy.
Easy to read color blocks 2.0 3.0
4.0 6.4 6.8 7.6 8.0
8.5 9.0 ppm
Measure water. acid, base, carbonate or dialysate pH. The
color blocks provide accurate pH readings of 7.2 - 7.6 for final dialysate
or 8.0 to 8.5 for bicarbonate concentrate.