ER1
Batteries are low and
need replacing
ER2
Wrong or bad buffer
value (out of range) or
the electrode is failing.
Check buffers or replace
electrode.
Over range signal from
voltage on a solution, the
electrode is not contacting
OR
the solution, or the
electrode is failing. Check
solution or replace
electrode.
Waterproof pHTestr 1 and 2
Instruction Card
IMPORTANT: Please read
completely before using the
Waterproof pHTestr 1 and 2.
File this card for future reference.
Before you Begin
:
Remove the cap from the bottom
of the Testr to expose the electrode
bulb and reference junction. DO
NOT BE ALARMED if white
crystals are present on the cap
or electrode assembly. This is
normal and will dissolve during the
conditioning pre-soak. For
the conditioning pre-soak, pour a
small amount (about 1” deep) of
electrode storage solution, pH 4
buffer or tap water into a small cup
and soak the electrode for at least 30
minutes. If the electrode dries out
between uses, re-condition by using
this soaking procedure.
Calibration:
Calibration is necessary and should
be done regularly, typically every
day that the Testr is used. Some
applications will need less frequent
calibrations but this can only be
determined by trial and error.
Calibrating Waterproof pHTestr 1:
1. Turn the Testr on by pressing the
ON/OFF button.
2. Dip 1/2 to 1" of the electrode into
a pH 7.0 buffer for general pur-
pose use, into pH 4.0 if your tests
will be in acidic solutions, or into
a pH 10 buffer if your tests will be
in alkaline (or basic) solutions. If
the tests will be in solutions closer
to pH 7.0 than pH 4.0 or 10.0,
even though acidic or basic, use
pH 7 buffer for calibration.
3. Press the CAL button to enter the
Calibrate (CA) mode. A ‘CA’ will
flash on the display and then a
pH value close to the pH buffer
value will flash repeatedly.
4. After at least 30 seconds (about 30
flashes) press the HOLD/CON
button
to confirm the calibration.
The display will show ‘CON’ and
Waterproof
Waterproof
pHTestr 1
pHTestr 2
Range
–1.0 to 15.0 pH
Resolution 0.1
pH
Accuracy
±0.2 pH
±0.1 pH
Calibration
At either pH 4.0;
pH 4.0; 7.0
7.0; or 10.0
and 10.0
Automatic
Temperature
No
Yes
Compensation
Auto-Buffer
Yes
Recognition
Operating
0 to 50ºC (32 to 122ºF)
Temperature
ON/OFF, HOLD, CA (Calibrate)
Functions
and CO (Confirm display);
Auto-off after 8.5 min. after
last operation
Three 1.5 V alkaline batteries
(included). 24 hours continuous
Power
use (approx. 720 tests per
battery set)
6.5”L x 1.5”Dia. (165 x 38mm)
Dimensions
unit only; 8.5” x 2.4” x 2.5”
(216 x 61 x 64mm) boxed
Weight
3.25oz./90g unit only;
4.5oz./125g boxed
Specifications:
Warranty:
The waterproof pHTestr 1 and water-
proof pHTestr 2 are warranted against
defects in materials and workmanship
for a period of 6 months from the date of
purchase. If repair, adjustment or
replacement is necessary and has not
been the result of abuse or misuse within
the 6 month period, please return the
Testr—freight pre-paid—and correction
will be made without charge. Out of
warranty products will be repaired on a
charge basis.
Return of Items:
Authorization must be obtained from
your OAKTON Distributor before
returning items for any reason. When
applying for authorization, please
include information regarding the reason
the item(s) are to be returned.
Note: We reserve the right to make
improvements in design, construction
and appearance of products without
notice. Prices are subject to change with-
out notice.
1
5
6
35624-02, -22 Printed in U.S.A. 1097-R3
1. Remove the Old Electrode
For older testrs with 2 slots only
2. Replace the Electrode
Small O-Ring (hidden)
Rotate collar away from you
Rubber
Gripper
Band
Older testers
may have only
two slots. In this
case, break off the
two small tabs using
a needle-nose pliers.
Ribbed Collar
Large O-Ring
Large Tab
Small
Tab
Insert Electrode
Replacement
Electrode
3. Tighten the Ribbed Collar
Rubber Gripper Band
Rotate collar towards you
Self-Diagnostic Messages
806-31
