Hanna Instruments HI 93710, Instruction Manual, Page: 39 / 52

39
D
• Fill a graduated beaker up to the 50 mL mark
with the sample.
• Add 0.5 mL of HI 93719A Calcium
and Magnesium indicator solution and
mix.
• Add 0.5 mL of HI 93719B Alkali
solution for Calcium and Magnesium
and mix.
• Fill three cuvets up to the mark with
10 mL of sample each.
• Add 1 drop of HI 93719C EDTA solu-
tion to one cuvet, replace the cap and
swirl the solution. This is the
ZERO1
sample.
• Add 1 drop of HI 93719D EGTA solu-
tion to the second cuvet, replace the
cap and swirl the solution. This is the
ZERO2 sample.
HARDNESS HARDNESS HARDNESS HARDNESS HARDNESS MEASUREMENT MEASUREMENT MEASUREMENT MEASUREMENT MEASUREMENT
Hardness
10 mL
10 mL
10 mL