26
SPECIFICATIONS
Range 0 to 500 mg/L (as CaCO
3
)
Resolution 5 mg/L
Precision ±10 mg/L @ 200 mg/L
Typical EMC ±5 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter
@ 525 nm
Method Colorimetric Method. The reaction between calcium
and the reagents causes a violet to orange tint in
the sample.
REQUIRED REAGENTS
Code Description Quantity/test
HI 93756A-0 Calcium Indicator Reagent 1 packet
HI 93756B-0 Calcium Buffer Reagent 1 packet
REAGENT SETS
HI 93756-01 Reagents for 100 tests
HI 93756-03 Reagents for 300 tests
For other accessories see page 49.
MEASUREMENT PROCEDURE
• Select the program number corresponding to calcium Hardness on
the secondary LCD by pressing PROGRAM ▼ and ▲.
• Fill the cuvet with 10 mL of unreacted
sample, up to the mark, and replace
the cap.
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and “SIP”
will blink on the dis-
play.
• Wait for a few seconds and the display
will show “-0.0-”. Now the meter is
zeroed and ready for measurement.
CALCIUM HARDNESS
Calcium Hardness
10 mL
