Useful Notes
1. To avoid cross contamination, rinse with clean water between samples and calibration standards.
2. For long-term storage, fill the cap with 20 mm of storage solution (NOT de-ionized water).
This will keep the sensor conditioned and ready for next use.
3
. Not recommended
for prolonged use with solutions containing heavy metals, proteins, tris buffer, or
sulfides which will clog the junction leading to slow response and eventual failure.
Changing Batteries (4) A76 or LR44 button cell type
1. Holding the tester with one hand, slide in the thumb to clear the front catch.
2. While still holding the tester, slide in the other thumb to clear the back catch.
3. With both catches are cleared, vertically slide the battery cover off the tester.
4. Change the batteries noting the polarity (flat positive side to the left). Replace
the battery cover onto the tester with the shorter tab above the display locking
the front and back to ensure a watertight seal.
Maintenance
1. Rinse sensor with clean water after each use.
2. Clean the sensor with a soft brush and mild dish soap to remove dirt and grease.
Error Messages
1.
–Batteries are weak and need replacement soon.
2
. bAt Lo
(low battery) – The battery power is too low to power on the instrument and requires
iimmediate replacement.
3
. StBL Err
( stabilizing error) – Appears when calibration is attempted but the reading is not yet
stable. Wait for the reading to stabilize or manually confirm the calibration by pressing enter.
3.
bUFF Err
(buffer error) – The buffer is outside of the calibration range.
4.
SLPE Err
(slope error) – The 2
nd
or 3
rd
calibration point is not within 80% to 120% slope range.
5.
Or
(over range) – The reading is above the measuring range of tester.
6.
Ur
(under range) – The reading is below the measuring range of tester.
Testers and Accessories Order Information
Ordering Code
Product Description
Pocket Tester
EXPERTPH
pH pocket tester with batteries
pH Buffer Solutions and Sachets
ECBU4BT
Colourless pH 4.01, 480 mL
ECBU7BT
Colourless pH 7.00, 480 mL
ECBU10BT
Colourless pH 10.01, 480 mL
ECPHBUFKIT
Colourless pH buffer set, pH 4.01, 7.00, 10.01, 480 mL each
ECBU4BS
pH 4.01 (NIST traceable), box of 20 x 20 mL sachets
ECBU7BS
pH 7.00 (NIST traceable), box of 20 x 20 mL sachets
ECBU10BS
pH 10.01 (NIST traceable), box of 20 x 20 mL sachets
ECRINWT
pH deionized water (NIST traceable), box of 20 x 20 mL sachets
ECBU4710R
pH buffer sachet set, pH 4.01, 7.00, 10.01, deionized water, 5 x 20 mL each
Storage and Cleaning Solutions
ECRE005
Storage solution for pH sensor, 480 mL
ECDPCBT
Protein remover solution, 480 mL
Other Accessories
EXPERTCAP
Replacement sensor cap
LANYARD
Tester lanyard
Warranty
This instrument is supplied with a warranty against manufacturing defects for a period of one year
from the date of purchase.
Operating Instructions For Expert pH
Conditioning Before First Use
The pH sensor must be hydrated to perform properly. If the pH electrode has been stored dry, soak as long as
needed to re-hydrate the sensor. Electrode storage solution works best, followed by pH buffer solution, followed
by tap water. 10 minutes is usually adequate but it may take much longer if the bulb is extremely dry. The
transparent cap can be used for soaking and storage. Keep upright for best results. Never store the sensor for
extended periods of time in deionized water.
Measurement
1. Remove the cap and press the to power on the tester.
2. Dip sensor in at least 20mm of test solution or up to the MAX fill line of the cap.
3. Stir gently while the reading stabilizes and wait for the icon to stop blinking.
4. The will appear on the display indicating that the reading is stable and measurement is complete.
Note: The tester automatically shuts off after 8.5 minutes of non-use to conserve batteries if you forget to turn
it off.
Menu (To Change Settings)
Press
MENU
to begin, and to leave the menu at anytime. Press
CAL
to return to the measurement mode.
To choose USA (4.0, 7.0, 10.0) or NIST (4.0, 6.9, 9.2) buffer values for automatic calibration:
To reset the calibration to factory default condition:
To change celsius / fahrenheit temperature unit:
To adjust the temperature reading:
Calibration
For best results, periodic calibration with accurate buffers is recommended prior to measurement. Use up to 3
standards and bracket your intended measuring range in any order. The tester will return to measurement after
each calibration point and retain the calibration when the instrument is powered off.
1. Remove the cap and press the to power on the tester.
2. Dip the sensor in at least 20mm of pH buffer.
3. Stir gently and press
CAL
to begin the pH calibration.
4. The display will show
CAL
followed by the default pH value. is indicated on the display during calibration
mode.
5. The icon will stop blinking when the pH reading is stable.
6. The icon is displayed when the automatic buffer value has been detected.
7. After 3 seconds, the tester will automatically calibrate the value. Alternatively, pressing will also accept
the value manually. Tester will show
donE
to confirm the calibration.
8. To calibrate additional point(s), repeat with additional pH buffers.
9. To abort pH calibration, press
CAL
to escape.
bUFF
bUFF
USA
bUFF
nlSt
donE
bUFF
r.SEt
r.SEt
nO
r.SEt
yES
r.SEt
bUFF
donE
r.SEt
dEG
dEG
C
°
C
dEG
F
°
F
donE
dEG
dEG
t.CAL
78.9
78.9
°
F
78.9
77.0
°
F
donE
t.CAL
MENU
MENU
MENU
MENU
MENU
MENU
ENTER
MENU
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
