45
• Press the
Zero
key. The display will show “
-0.0-
” when the meter is zeroed and ready for measurement.
• Remove the cuvette and add the content of one packet
of HI 93750B-0 reagent. Replace the cap and gently mix
for one minute by slowly turning the cuvette upside down.
• Reinsert the cuvette into the instrument.
• Press
Timer
and the display will show the countdown prior
to the measurement or, alternatively, wait for 2 minutes
and press
Read
. When the timer ends the meter will
perform the reading. The instrument displays the results in
mg/L (ppm) of potassium (K)
.
• Press
or
to access the second level functions.
• Press the
Chem Frm
key to convert the result in mg/L of potassium oxide (K
2
O).
• Press
or
to return to the measurement screen.
INTERFERENCES
Interferences may be caused by:
Ammonium above 10 ppm
Calcium above 10000 ppm as CaCO
3
Chloride above 12000 ppm
Magnesium above 8000 ppm as CaCO
3
Sodium above 8000 ppm
Potassium MR