55
• Remove the cuvet.
• Add the content of one packet
of HI 93747 reagent. Replace
the cap and shake gently for
about 15 seconds.
• Reinsert the cuvet into the instrument.
• Press TIMER and the display will show the countdown prior to the
measurement or, alternatively, wait for 45 seconds and press
READ DIRECT. In both cases "SIP" will blink during measurement.
• Multiply the reading on the Liquid Crystal Display by 10 to
obtain the concetration in mg/L of oxygen demand.
INTERFERENCES
Interference may be caused by:
Silver
Cyanide
For samples overcoming buffering capacity of reagent (around pH 6.8),
pH should be adjusted between 6 and 8.
Copper LR
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