OPERATION
• Connect the electrode
to the meter as shown
in the drawing, and
turn the meter on.
Note: The PICCOLO®plus model
is provided with an OFF/pH/°C
switch. Select the "pH" position
for pH readings, or "°C" for tem-
perature measurements.
• Remove the protective cap and
dip the electrode in the sample
to be measured, without exceed-
ing the maximum immersion
level. Stir gently and wait for the
reading for stabilize.
• The pH value automatically com-
pensated for temperature varia-
tions will be displayed.
• After use, always switch the
meter off.
MAINTENANCE
• To reactivate a dry electrode,
immerse it in HI 70300 storage
solution for 4 hours.
BATTERY REPLACEMENT
When the meter cannot be
switched on or the display fades,
batteries should be replaced.
Unscrew the upper
screw and slide off
the battery compart-
ment. Replace all 3
batteries while pay-
ing attention to the
correct polarity.
Reinsert the cover and tighten the
screw. After battery replacement,
it is always recommended to
recalibrate the instrument.
Batteries should only be replaced
in a safe area and using the bat-
tery type specified in this instruc-
tion manual.
WARRANTY
These meters are guaranteed for one year against de-
fects in workmanship and materials when used for their
intended purpose and maintained according to instruc-
tions. Electrodes are guaranteed for six months. This
warranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of
prescribed maintenance are not covered. If service is
required, contact the dealer from whom you purchased
the instrument. If under warranty, report the model num-
ber, date of purchase, serial number and the nature of
the failure. If the repair is not covered by the warranty, you
will be notified of the charges incurred. If the instrument
is to be returned to Hanna Instruments, first obtain a
Returned Goods Authorization Number from the Customer
Service department and then send it with shipment costs
prepaid. When shipping any instrument, make sure it is
properly packaged for complete protection.
Recommendations for Users
Before using these products, ensure that they are entirely
suitable for the environment in which they are used. Op-
eration of these instruments in residential areas could
cause unacceptable interference to radio and TV equip-
ment. The glass bulb at the end of the electrode is sen-
sitive to electrostatic discharges. Avoid touching this glass
bulb at all times. During operation of the instrument, ESD
wrist straps should be worn to avoid possible damage to
the pH electrode by electrostatic discharges. Any varia-
tion introduced by the user to the supplied equipment
may degrade the instrument’s EMC performance. To avoid
electrical shock, do not use these instruments when volt-
age at the measurement surface exceeds 24Vac or 60Vdc.
To avoid damage or burns, do not perform any measure-
ment in microwave ovens.
• After use, rinse the electrode with water and store it with a few drops
of storage solution in the protective cap.
CALIBRATION
• To access the calibration trimmers, slide down the probe. Then turn
the meter on.
• Dip the probe in HI 7007 (pH 7.01) buffer solution and allow the
reading to stabilize. With the supplied screwdriver, adjust the "pH7"
trimmer to read "7.01" pH.
• Rinse the electrode with water and dip it in the second buffer.
Use HI 7004 (pH 4.01) buffer if the solution to be tested is acidic, or
HI 7010 (pH 10.01) for alkaline samples.
• Allow the reading to stabilize, then adjust the "pH 4/10" trimmer to
read "4.01" or "10.01" pH.
• The calibration is now complete and the electrode can be slided
back to its normal position.
