Hanna Instruments HI83300 - Calcium Hardness Measurement

91
8.25. HARDNESS, CALCIUM
SPECIFICATIONS
Range 0.00 to 2.70 mg/L (as CaCO
3
)
Resolution 0.01 mg/L
Accuracy ±0.11 mg/L ±5% of reading at 25 °C
Light Source LED with narrow band interference filter @ 525 nm
Method Adaptation of the Standard Methods for the Examination of Water and
Wastewater, 18th edition, Calmagite method.
REQUIRED REAGENTS
Code Description Quantity
HI93720A‑0 Calcium Hardness Reagent A 0.5 mL
HI93720B‑0 Calcium Hardness Reagent B 0.5 mL
HI93720C‑0 Calcium Hardness Reagent C 1 drop
REAGENT SETS
HI93720‑01 Reagents for 100 tests
HI93720‑03 Reagents for 300 tests
For other accessories see page 200.
MEASUREMENT PROCEDURE
• Select the Hardness (Calcium) method using the procedure
described in the Method Selection section (see page 18).
• Rinse a graduated beaker several times with unreacted
sample, before filling it to the 50 mL mark with the sample.
• Add 0.5 mL of HI93720A‑0 Calcium Hardness Reagent A
and swirl to mix.
• Add 0.5 mL of HI93720B‑0 Calcium Hardness
Reagent B and swirl to mix. Use this solution to rinse
2 cuvettes before filling them up to the 10 mL mark.
# 1
# 2
HARDNESS, CALCIUM