User Guide

SPECIFICATIONS
Range 0 to 400 mg/L
Resolution 10 mg/L
Accuracy ±10 mg/L ±5% of reading
Light Source Tungsten lamp with narrow band interference filter
@ 466 nm
Method Adaptation of the Oxalate method.
REQUIRED REAGENTS
Code Description Quantity
- Buffer Reagent 4 drops
HI 93752A-0 Ca Calcium Buffer Reagent 7 mL
HI 93752
BB
BB
B-0 Ca Calcium Oxalate Reagent 1 mL
REAGENT SETS
HI 937521-01 Reagents for 50 tests
HI 937521-03 Reagents for 150 tests
For other accessories see page 56.
MEASUREMENT PROCEDURE
Note: for sample preparation follow the IRRIGATION WATER (LR)
procedure at page 19.
• Select the program number 13 “Calcium” on the secondary LCD
by pressing PROGRAM M and L.
• Using the 5 mL syringe add exactly 3.00 mL of sample to the
cuvet
• Add 4 drops of Buffer Reagent.
• Use the pipette to fill the cuvet
up to the 10 mL mark with
the HI 93752A-0 Ca Buffer
reagent.
CALCIUM
Calcium
29
3 mL of sample
x4
3 mL
probable level of
liquid taken up by syringe
• Press ZERO and "SIP" will
blink on the display.
• Wait for a few seconds and the display will
show "-0.0-". Now the meter is zeroed and
ready for measurement.
• Remove the cuvet.
• Using the other 1 mL syringe, add to the cuvet
exactly 0.5 mL of sample.
NoteNote
NoteNote
Note: Do not mix up the two syringes!
• Replace the cap and invert
several times to mix.
• Reinsert the cuvet into the instrument.
• Press TIMER and the display will show
the countdown prior to the measurement or, alternatively, wait for
15 seconds and press READ DIRECT. In both cases “SIP” will blink
during measurement.
• The instrument directly displays concentration in mg/L of Magnesium
(Mg) on the Display.
INTERFERENCES
concentration reading
Acidity (as CaCO
3
) above 1000 mg/L lower
Alkalinity (as CaCO
3
) above 1000 mg/L higher
Calcium (Ca
2+
) above 200 mg/L higher
Iron -- higher
Aluminum -- higher
Copper -- higher
0.5 mL
of sample
Magnesium
32