LaMotte ColorQ DW - Manual (Page 3)

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