3
*Hardness 1 Buffer: Code 7045-G
Hardness 2 Indicator: Code 7046-G
HARDNESS
ColorQ Range: 0-41 GPG
hb
3
1. Press button to go to “Hd” Hardness.
2. Fill a clean tube to the 5 mL line with water sample.
3. Add 5 drops
and
Hardness 1 Buffer
Hardness 2 Indicator
to same tube.
5. Press button to read “Hd” Hardness in gpg. Remove tube.
4. Cap. Invert 3 times to mix. Insert tube into ColorQ.
DILUTION
A. Use the 1 mL pipet to add 2 mL water sample to a clean test tube.
C. Blank with the diluted sample from step B.
E. Multiply displayed result by 2.5.
Samples with hardness concentrations above 41 gpg must be diluted.
The meter will display “Hi”.
B. Dilute to the 5 mL line with distilled or deionized water. Cap and mix.
D. Follow the test procedure with this diluted sample starting with step 3.
Color
Q
Color
Q
5
5
+
