User Guide

ManualsBrandsHanna Instruments ManualsOtherHI 931402

16

CAL

1

BUF

pH

CAL

°C

HI 7006

4 cm

(1½

")

CAL

1

BUF

pH

PROCEDURE FOR HI 931402

Calibration of HI 931402 has a choice of 5

memorized standard buffers: 4.01, 6.86, 7.01,

9.18 and 10.01 pH.

• Make sure that the meter is in pH mode.

• Remove the protective cap from the elec-

trode and rinse it with some of the buffer

calibration solution you are going to use first.

ONE POINT CALIBRATION

One point calibration at pH 6.86 (NBS):

• Immerse the pH electrode

and the temperature probe

into pH 6.86 buffer solution

and shake briefly.

Note: the electrode should

be submerged approxi-

mately 4 cm (1½") into the

solution. The temperature

probe should be located as

close as possible to the pH electrode.

• Press the CAL key. The "CAL" and "

BUF

1

"

indicators will be displayed. The second-

ary LCD will display "4.01".

• Press the

°C

key. The secondary display

will change to “6.86”.

• When the electrode is submerged in the

buffer solution, the meter will notify the

user if the reading is not stable.

If the readings fluctuate the

LCD will blink "NOT READY".

NOT READY