Measurement
Use SET/HOLD to select pH mode. Place
the electrode in the solution to be tested
while stirring gently. The measurement
should be taken after the stability tag
has disappeared. The pH value is displayed
on the first LCD line and the temperature on the second LCD line.
Note: Before taking any pH measurement make sure the tester
has been calibrated (“CAL“ tag is displayed).
EC/TDS Calibration & Measurement
Calibration Procedure
• From measurement mode, press and hold /MODE until “CAL” is
displayed on the second LCD line.
• Place the probe in calibration solution: HI70031 (1413 µS/cm)
for HI98129 and HI70030 (12.88 mS/cm) for HI98130.
• The LCD displays “OK” for 1 second and the tester returns to
measurement mode.
Note: The “CAL” tag on the LCD indicates that the tester is calibrated.
Measurement
Use SET/HOLD to select either EC or TDS mode.
Place the electrode in the solution to be tested
while stirring gently. Use plastic beakers to
minimize any electromagnetic interferences.
The measurement should be taken after the
stability tag
has disappeared. The EC/TDS value is displayed on the
first LCD line and the temperature on the second LCD line.
Note: Before taking any measurement make sure the tester has
been calibrated (“CAL“ tag is displayed).
Changing EC/TDS Conversion Factor (CONV) & Temperature
Compensation Coefficient ß (BETA)
• From measurement mode, press and hold
/MODE until “TEMP”
and the current temperature unit are displayed on the second LCD
line (e.g. “TEMP °C”).
• Press /MODE again to show the current conversion factor (e.g.
“0.50 CONV”) and SET/HOLD to change the conversion factor.
• Press /MODE to show the current temperature compensation
coefficient ß (e.g. “% 2.1 BETA”) and SET/HOLD to change the
temperature compensation coefficient ß.
• Press /MODE to return to measurement mode.
Maintenance
Please read the information below to ensure the highest possible
accuracy.
• Fresh buffer solution should be used for each calibration.
• For improved accuracy a two-point calibration is recommended.
• If measurements are taken successively, rinse the probe thoroughly
in distilled or deionized water to eliminate cross-contamination.
• Clean the electrode monthly using pH and EC cleaning solution.
Keep the electrode in HI7061 - General purpose cleaning solution
for 30 minutes and rinse the probe thoroughly with water.
• When not in use, add a few drops of HI70300 Storage solution to the
protective cap. Never store the probe in distilled or deionized water.
Electrode Replacement
Use supplied removal tool (HI73128) to replace the pH electrode.
Insert the tool into the probe cavity.
Rotate the tool counterclockwise.
Pull the electrode out by using the
other side of the tool. Insert a new
pH electrode following the above
instructions in reverse order.
Battery Replacement
Battery life percentage indicator is displayed at power on. If the
battery level drops below 5%, the symbol lights up indicating
that the batteries should be replaced soon.
If the battery level is not adequate to guarantee an accurate reading,
the tester automatically turns off.
To replace the batteries, follow the next steps:
1. Turn OFF the tester.
2. Remove the four screws on the top of the tester to open the battery
compartment (figure 1).
3. Remove the old batteries.
4. Insert four new 1.5V AA batteries in the battery compartment
while paying attention to the correct polarity (figure 2).
5. Close the battery compartment using the four screws.
fig. 1 fig. 2
Note: Only use the battery type specified in the manual. Old
batteries should be disposed in accordance with local regulations.
Accessories
Electrode
HI73127 Replaceable pH electrode
HI73128 Electrode removal tool
Solutions
HI70004P pH 4.01 solution, 20 mL sachet (25 pcs.)
HI70006P pH 6.86 solution, 20 mL sachet (25 pcs.)
HI70007P pH 7.01 solution, 20 mL sachet (25 pcs.)
HI70009P pH 9.18 solution, 20 mL sachet (25 pcs.)
HI70010P pH 10.01 solution, 20 mL sachet (25 pcs.)
HI770710P
pH 10.01 & 7.01 solution, 20 mL sachet (10 pcs., 5 each)
HI77400P pH 4.01 & 7.01 solutions, 20 mL sachet (10 pcs., 5 each)
HI70030P 12.88 mS/cm solution, 20 mL sachet (25 pcs.)
HI70031P 1413 µS/cm solution, 20 mL sachet (25 pcs.)
HI70032P 1382 ppm solution, 20 mL sachet (25 pcs.)
HI70038P 6.44 ppt solution, 20 mL sachet (25 pcs.)
HI70442P 1500 ppm solution, 20 mL sachet (25 pcs.)
Electrode Cleaning Solution
HI7061M General purpose cleaning solution, 230 mL
Electrode Storage Solution
HI70300M Electrode storage solution, 230 mL
Other Accessories
HI740026P Replacement 1.5 V batteries (12 pcs.)
Certification
All Hanna Instruments conform to the CE European
Directives.
Disposal of Electrical & Electronic Equipment. The
product should not be treated as household waste.
Instead hand it over to the appropriate collection point
for the recycling of electrical and electronic equipment
which will conserve natural resources.
Disposal of waste batteries. This product contains batteries, do not
dispose of them with other household waste. Hand them over to the
appropriate collection point for recycling.
Ensuring proper product and battery disposal prevents potential
negative consequences for the environment and human health. For
more information, contact your city, your local household waste
disposal service, the place of purchase or go to www.hannainst.com.
Recommendations for Users
Before using this tester, make sure that it is entirely suitable for your
specific application and the environment in which it is used. The glass
bulb at the end of the electrode is sensitive to electrostatic discharges.
Avoid touching the glass bulb at all times. Any variation introduced
by the user to the supplied equipment may degrade the tester’s
performance. For yours and the tester’s safety do not use or store the
tester in hazardous environments.
Warranty
HI98129 and HI98130 are warranted for a period of one year against defects
in workmanship and materials when used for their intended purpose and
maintained according to instructions. The electrode is warranted for a period
of six months. This warranty is limited to repair or replacement free of charge.
Damage due to accidents, misuse, tampering or lack of prescribed maintenance
is not covered. If service is required, contact your local Hanna Instruments
Office. If under warranty, report the model number, date of purchase, serial
number and the nature of the problem. 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 Office, first obtain
a Returned Goods Authorization (RGA) number from the Technical Service
department and then send it with shipping costs prepaid. When shipping any
instrument, make sure it is properly packaged for complete protection.
Hanna Instruments reserves the right to modify the design, construction,
or appearance of its products without advance notice.
All rights are reserved. Reproduction in whole or in part is prohibited without the
written consent of the copyright owner, Hanna Instruments Inc., Woonsocket,
Rhode Island, 02895, USA.
IST98129 09/19
HI98129 • HI98130
Waterproof pH, EC/TDS
& Temperature Testers
INSTRUCTION MANUAL
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