47
Chromium VI HR
• Remove the cuvet and add the
content of one packet of HI
93723 reagent. Replace the cap
and shake vigorously for about
10 seconds.
• Reinsert the cuvet into the instrument.
• Press TIMER and the display will show the countdown prior to the
measurement or, alternatively, wait for 6 minutes and press READ
DIRECT. In both cases "SIP" will blink during measurement.
• The instrument directly displays concentration in µg/L of chromium
VI on the Liquid Crystal Display.
INTERFERENCES
Interference may be caused by:
Vanadium above 1 ppm. However, waiting 10 minutes before
reading, the interference is removed
Iron above 1 ppm
Mercurous and mercuric ions cause slight inhibition of the reaction.
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