Hanna Instruments HI 933300 - Manual (Page 22)

20
P R O C E D U R E F O R S I N G L E P O I N T
CALIBRATION WITH BUFFER SOLUTION
HI933300 and HI933301 have auto-buffer rec-
ognition: you can simply place the probe into
the type of buffer solution that you need to
calibrate and perform the single point calibra-
tion very quickly as described below.
Choose one of the following calibration solu-
tions:
84.0 µS/cm (cal. solution HI 7033/HI8033)
1413 µS/cm (cal. solution HI 7031/HI8031)
12.88 mS/cm (cal. solution HI 7030/HI8030)
80.0 mS/cm (cal. solution HI 7034/HI8034)
• Fill a beaker with conduc-
tivity calibration solution
(e.g. HI 7030 or HI 8030,
12.88 mS/cm).
• Press the RANGE key to
select the conductivity
measurement mode.
• Dip the probe into the
sample. The level of solu-
tion must be higher than
the holes on the PVC
sleeve. Tap the probe re-
peatedly on the bottom of
the beaker and stir it to ensure that no air
bubbles are trapped inside the sleeve.
• Press the CAL key and the buffer value
will be blinking on the display (e.g.
12.88 mS/cm).
8 cm
(3¼")
RANGE
CAL
mS