horiba LAQUA WQ-300 Series Quick Manual

Quick Guide
LAQUA WQ-300 Series
Handheld Meters
www.horiba-laqua.com
4. Press ENT button to confirm the pH reading. To abort calibration, press MEAS button.
The meter will show
DONE briefly then
switch to measurement
mode. The calibrated pH
value and the electrode
icon will appear in
measurement mode.
5. Repeat step nos. 1 to 4 to perform calibration with the next pH buffer(s).
The meter allows up to 5 calibration points for USA, NIST, NIST10, Custom pH buffers and up to 6
calibration points for DIN pH buffers.
6. Rinse the pH electrode with clean water and blot using lint-free tissue to remove
excess water.
7. Immerse the pH electrode in sample.
Make sure that the glass membrane and
junction of the pH electrode are immersed
in sample.
P/N: 3200832948
LAQUA 300 Series pH Quick Guide - A5.indd 1
pH Calibration & Measurement
1. Rinse the pH electrode
with clean water and
blot using lint-free
tissue to remove
excess water.
2. Immerse the pH electrode in pH buffer.
Perform 2-point calibration using
pH 7 and 4 for acidic sample or pH
7 and 10 for alkaline sample.
Perform 3-point calibration using
pH 7, 4, and 10 if you are unsure
of the expected sample value. It
is recommended to calibrate with
pH 7 first.
3. Press CAL button on the meter to switch to
calibration mode.
The set pH buffer group is displayed at the bottom of the
screen. The  icon on the screen and LED light on the
electrode (if switched on) will blink until the reading is stable.
Press
Press
CODE: GZ0000584705
8/10/2019 1:56:45 PM