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31
ALK
ALINITY
10 mL
8. METHOD PROCEDURES
8.1. ALKALINITY
SPECIFICATIONS
Range
0 to 500 mg/L (as CaCO
3
)
Resolution
1 mg/L
Accuracy
±5 mg/L ±5% of reading at 25 °C
Light Source
LED with narrow band interference filter @ 610 nm
Method
Colorimetric Method.
REQUIRED REAGENTS
Code
Description
Quantity
HI775S
Alkalinity Reagent
1 mL
HI93755‑53
Chlorine Removal Reagent
1 drop
REAGENT SETS
HI775‑26
Reagents for 25 tests
For other accessories see page 87.
MEASUREMENT PROCEDURE
• Select the
Alkalinity
method using the procedure described in the
Method Selection section (see page 17).
• Fill the cuvette with 10 mL of unreacted sample (up to the mark)
and replace the cap.
• Place the cuvette into the holder and close the lid.
• Press the
Zero
key. The display will show “‑0.0‑” when the meter is zeroed and ready for
measurement.