48Chromium VI LR
SPECIFICATIONS
Range 0 to 300 µg/L
Resolution 1 µg/L
Accuracy ±1 µg/L ±4% of reading
Typical EMC ±1 µg/L
Deviation
Light Source Tungsten lamp with narrow band interference
filter @ 525 nm
Method Adaptation of the ASTM Manual of Water and
Environmental Technology, D1687-92,
Diphenylcarbohydrazide method. The reaction be-
tween chromium VI and the reagent causes a
purple tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93749-0 Powder reagent 1 packet
REAGENT SETS
HI 93749-01 Reagents for 100 tests
HI 93749-03 Reagents for 300 tests
For other accessories see page 141.
MEASUREMENT PROCEDURE
• Select the program number corresponding to Chromium VI LR on
the secondary LCD by pressing PROGRAM W and V.
• 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 display.
• Wait for a few seconds and the display will
show “-0.0-”. Now the meter is zeroed
and ready for measurement.
CHROMIUM VI LOW RANGECHROMIUM VI LOW RANGE
CHROMIUM VI LOW RANGECHROMIUM VI LOW RANGE
CHROMIUM VI LOW RANGE
10 mL
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