Hanna Instruments HI8424 User Manual

Page 10

• When the buffer value is recognized and the

reading is stable, an acoustic signal (if en-
abled) advises the user, the "pH" symbol stops
flashing, the hourglass indicator disappears
and the "CFM" tag starts blinking to indicate
that the value can be confirmed.

• Press CFM to store the first calibration point.
• The meter expects a pH 4.01 or 10.01 buffer.
• Rinse and immerse the pH electrode and the

temperature probe in pH 4.01 or pH 10.01
buffer (2

calibration point) and stir gently.

• When the buffer value is recognized and the

• Press CFM to store the second calibration point.
• The meter returns to normal mode.

The pH calibration is now complete; "CAL" and the
pH tags corresponding to the buffers used for
calibration are lit on the LCD.

Notes:
• If the buffer value is not recognized, after 12 seconds the meter will display

blinking dashes together with the "WRONG"
tag. Either the buffer solution is wrong or out
of specification and needs to be replaced or the
electrode is damaged.

• The meter will retain the calibration if the battery is removed.
• To quit calibration and keep previous data: press CAL after entering the

calibration mode and before the first point is accepted.

• To perform a single-point calibration: press CAL after the first point has been

confirmed.

If the temperature probe is not connected and manual temperature compensa-
tion is required, follow the procedure below:
• Press RANGE to select the temperature mode.
• Rinse the pH electrode and place it into the pH 7.01 buffer, stir briefly and

wait a few minutes to reach thermal equilibrium.

pH CALIBRATION SOLUTIONS

HI 70004P pH 4.01 buffer solution, 20 mL sachet (25 pcs)
HI 7004M

pH 4.01 buffer solution, 230 mL bottle

HI 7004L

pH 4.01 buffer solution, 500 mL bottle

HI 8004L

pH 4.01 buffer solution, 500 mL FDA bottle

HI 70007P pH 7.01 buffer solution, 20 mL sachet (25 pcs)
HI 7007M

pH 7.01 buffer solution, 230 mL bottle

HI 7007L

pH 7.01 buffer solution, 500 mL bottle

HI 8007L

pH 7.01 buffer solution, 500 mL FDA bottle

HI 70010P pH 10.01 buffer solution, 20 mL sachet (25 pcs)
HI 7010M

pH 10.01 buffer solution, 230 mL bottle

HI 7010L

pH 10.01 buffer solution, 500 mL bottle

HI 8010L

pH 10.01 buffer solution, 500 mL FDA bottle

STORAGE & CLEANING SOLUTIONS

HI 70300M Storage solution, 230 mL bottle
HI 80300M Storage solution, 230 mL FDA bottle
HI 70300L Storage solution, 500 mL bottle
HI 80300L Storage solution, 500 mL FDA bottle
HI 70000P Electrode rinsing solution, 20 mL sachet (25 pcs.)
HI 7061M

General cleaning solution, 230 mL bottle

HI 8061M

General cleaning solution, 230 mL FDA bottle

HI 7061L

General cleaning solution, 500 mL bottle

HI 8061L

General cleaning solution, 500 mL FDA bottle

HI 7073M

Protein cleaning solution, 230 mL bottle

HI 8073M

Protein cleaning solution, 230 mL FDA bottle

HI 7073L

Protein cleaning solution, 500 mL bottle

HI 8073L

Protein cleaning solution, 230 mL FDA bottle

HI 7074M

Inorganic cleaning solution, 230 mL bottle

HI 7074L

Inorganic cleaning solution, 500 mL bottle

HI 7077M

Oil & Fat cleaning solution, 230 mL bottle

HI 8077M

Oil & Fat cleaning solution, 230 mL FDA bottle

HI 7077L

Oil & Fat cleaning solution, 500 mL bottle

HI 8077L

Oil & Fat cleaning solution, 500 mL FDA bottle

REFILLING ELECTROLYTE SOLUTIONS

HI 7071

3.5 M KCl+AgCl electrolyte solution, 4 x 30 mL bottle, for single
junction electrodes

HI 8071

3.5 M KCl+AgCl electrolyte solution, 4 x 30 mL FDA bottle, for
single junction electrodes

HI 7072

1 M KNO

electrolyte solution, 4 x 30 mL bottle

A C C E S S O R I E S