1
I
PHscan10/20
Overview
Thank you for selecting the PHscan series pocket pH tester. This user
manual provides a step-by-step guide to help you operate the tester,
please carefully read the following instructions before use.
Installing the Batteries
1. Remove the battery compartment lid.
2. Insert three LR44 alkaline batteries into the battery compartment,
note polarity.
3. Replace the battery compartment lid to its original position and
turn clockwise until tight.
Keypad
Key
Function
•
Switch the tester on or off
•
Lock or unlock measurement
•
Exit calibration and return to the pH measurement
•
Start calibration
•
Select the pH buffer option
•
Confirm the calibration or displayed option
•
Toggle between pH and temperature measurement
modes (For PHscan20 tester only)
Prior to Use
Remove the protective cap (and translucent cover) from the bottom of
the tester. If some salt crystals deposited on the electrode, rinse with
tap water to clean these deposits.
If tiny air bubbles are present inside the pH-sensitive glass membrane,
gently shake the tester downward to remove air bubbles.
If the glass membrane has dried out, soak the electrode in 3M KCl or
pH 4.01 buffer solution for about 30 minutes. If above solutions are
not available, use the tap water.
Switching the Tester On and Off
•
Press the
Meas
key to switch on the tester.
•
Press and hold the
Meas
key to switch off the tester.
If you do not press any key within 8 minutes, the tester will switch off
automatically to conserve energy.
pH Calibration
The PHscan10/20 tester allows 2 points pH calibration. We recommend
calibrating the tester during the first use or new electrode replaced. For
better accuracy, regular calibration is recommended. Do not reuse the
buffer solutions after calibration, contaminants in solution will affect
the calibration and eventually the accuracy of the measurement.
3M KCl solution
pH-sensitive
glass membrane
