User Guide

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.