Hanna Instruments | HI981036 | Owner Manual | Hanna Instruments HI981036 Owner Manual

Hanna Instruments HI981036 Owner Manual
Care and Maintenance
To obtain the highest accuracy for measurements it is important to follow these tips:
• Fresh buffer should be used for each calibration. Calibration is only as good as the
buffer being used. The pH buffer values change over time once the sachets are opened.
• The probe should be rinsed with purified water each time before placing in buffer or
sample to be tested.
• When the meter is not in use it is important to add several drops of storage solution to
the protective cap to keep the probe hydrated. If storage solution is not available, pH
4.01 or pH 7.01 buffer can be used.
• For improved accuracy it is recommended to calibrate in two buffers.
• It is important to calibrate and measure samples at the same temperature as there
is no temperature compensation. A dramatic change in temperature between buffer
solutions and samples to be tested will give inaccurate readings.
Place meter in calibration mode. Press and hold
ON/OFF until “CLr” is displayed. The meter will
now be at default calibration.
The meter is warranted for a period of one year against defects in workmanship and materials when
used for their intended purpose and maintained according to instructions. 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, 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.
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.
Meat pH Tester
To change the CR2032 Li-ion battery, turn the battery cover located on the back of the meter
counterclockwise to unlock. Remove cover and replace the battery with + side facing up.
Note: Batteries should only be replaced in a safe area using the battery
type specified in this instruction manual. Old batteries should be disposed in
accordance with local regulations.
“Err” Message
In calibration mode, if the meter displays an
“Err” message when in the correct fresh buffer
solution then the probe should be cleaned.
Place the probe in the HI700630 cleaning
solution for 20 minutes. Rinse with purified water
and place in storage solution for a minimum of
30 minutes before calibrating.
Battery Indicator
The meter features a low battery indicator. When
the battery is running low, the tag will blink on
screen. When the battery has been depleted,
“Erb” will appear on screen and the meter will
turn off.
Recommendations for Users
Before using this product, make sure it is entirely suitable for your specific application and for the
environment in which it is used. Any variation introduced by the user to the supplied equipment may
degrade the meters’ performance. For yours and the meter’s safety do not use or store the meter in
hazardous environments.
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.
Clear Calibration
Refilling the Electrode
• If fouled, rinse the sleeve and sensor tip with purified water. Turn over the probe,
remove the sleeve by carefully rotating it and pull straight along the axis of the
electrode. Use care as the pH stem is
made of glass. Rinse off any traces of
electrolyte gel.
• Soak the sensor tip in HI700601P
or HI700630P cleaning solution for
20 minutes then rinse with purified water.
• Refill the reference well with HI9071
Gelled Bridge Electrolyte.
• Replace the reference sleeve: insert and
push the sleeve onto the electrode. Make
sure the black O-ring is fixed inside the
electrode body. Any excess of gel will be
expelled from the end of the electrode through the open junction.
• Rinse any excess gel off with purified water and gently dry off
body with a soft cloth or tissue.
• Soak assembled probe in Electrode storage solution for a
minimum of 30 minutes.
• Rinse probe with purified water.
• Shake the electrode down as you would do with a clinical
thermometer to eliminate any air bubbles inside the glass bulb.
• Calibrate in fresh buffers before using for measurements.
Battery Replacement
From measurement mode, press and hold the
ON/OFF button. The meter will cycle through
“OFF,” “CAL,” then current auto-off setting.
The default setting is 8 minutes (“d08”). Press
ON/OFF button to change. “d60” is auto-off after
60 minutes, and “d--” disables the auto-off
feature. Press and hold the button to exit the
pH Buffer Solution
pH 4.01 buffer solution, 20 mL sachets (25 pcs.)
pH 7.01 buffer solution, 20 mL sachets (25 pcs.)
pH 4.01 & 7.01 buffer solution, 20 mL sachets (10 pcs., 5 ea.)
Electrode Cleaning Solution
General purpose cleaning solution, 20 mL sachets (25 pcs.)
Meat, grease and fats acid cleaning solution, 20 mL sachets
(25 pcs.)
Electrode Storage Solution
Electrode storage solution, 500 mL bottle
Electrode storage solution, 230 mL bottle
Electrode storage solution, 13 mL dropper
Electrode Fill Solution
Gelled Bridge Electrolyte
IST981036 06/18
Preliminary Examination
Remove the meter from the packing material and examine it carefully to make sure that
no damage has occurred during shipment. If noticeable damage is evident, contact your
local Hanna Instruments Office.
Each meter is supplied with:
• pH 4.01 buffer solution liquid sachet (2 pcs.)
• pH 7.01 buffer solution liquid sachet (2 pcs.)
• Meat, grease and fats acid cleaning solution (2 pcs.)
• Electrode storage solution, 13 mL dropper
• Electrode fill solution
• Instruction manual
• Quality certificate
Note: Save all packing material until you are sure that the instrument functions correctly.
All defective items must be returned in the original packaging with the supplied accessories.
Intended use
The meter has been specially designed for meat processing. In the meat processing
industry, the monitoring of pH is considered to be of the utmost importance due to its
effect on the meat's quality factors including water binding capacity and shelf life. Upon
slaughter, biochemical processes begin to break down the meat. Glycolysis begins postmortem, converting glycogen to lactic acid, reducing the pH of the carcass. Depending
on a number of factors such as type of animal and even breed, this decrease in pH can
take anywhere from a single hour to many. It is vital to monitor pH during this phase
as once the lowest pH value is reached, the pH will begin to slowly rise, indicating that
decomposition has begun.
The pH value of meat influences its’ water binding capacity which directly impacts
consumer qualities such as tenderness and color. Lower pH values result in a lower
water-binding capacity and lighter colors. Factors such as these can be important when
considering how to efficiently produce meat products. For example, when producing dry
sausages the meat must have a low water binding capacity so that it can dry evenly.
Depending on the type of the final product and the steps required to get there, pH
values will vary throughout the meat processing industry. It is imperative, regardless
of the final product, that pH be maintained at a low value to prevent bacterial spoilage
and comply with food safety regulations. By monitoring pH values throughout the meat
production process, you can ensure the creation of consistent and safe meat products.
Probe Features
Polyvinylidene fluoride (PVDF) is a food grade plastic that is resistant to most chemicals
and solvents, including sodium hypochlorite. It has high abrasion resistance, mechanical
strength and resistance to ultraviolet. PVDF is also resistant to fungal growth.
Suspended solids can permanently clog the pores of a
ceramic reference junction. The open junction design
provides a constant junction potential and minimizes
blockage by providing an open gel interface between the
sample and internal Ag/AgCl reference. Should meat enter
into the junction, the junction can be easily cleaned and
refreshed with new bridge electrolyte.
Battery Type
Battery Life
0.0 to 14.0 pH
0.1 pH
±0.2 pH @25 °C/77 °F
Automatic, one or two-point
Built-in probe for specific application
CR2032 Li-ion
Approximately 1000 hours of continuous use
8 minutes, 60 minutes or can be disabled
0 to 50 °C (32 to 122 °F); RH 95% max
51 x 148 x 21 mm (2 x 5.8 x 0.9“)
43 g (1.5 oz.)
The pH electrode is shipped with a protective cap containing storage solution. Before
using the meter, remove the protective cap and condition the electrode by soaking the
tip (bottom 4 cm (1.5”)) in pH 7.01 buffer solution for several minutes. Then follow the
calibration procedure.
• Do not be alarmed if white crystals appear around the cap. This is normal with pH
electrodes and they dissolve when rinsed with water.
• Turn the meter on by pressing ON/OFF button.
• For best results recalibrate periodically.
• After use, rinse the electrode with water and store it with a few drops of storage
solution in the protective cap.
• Reinstall the protective cap after each use.
Liquid Crystal
pH Probe
If pH 7.01 buffer solution is used as
the first point the buffer is recognized
with the blinking stability indicator.
When the reading is stable, the
stability indicator will disappear
and pH 7.01 will be calibrated.
If pH 7.01 is the only calibration point,
finish one-point procedure at right.
If using pH 4.01 as a second point,
continue two-point procedure at right.
Press the ON/OFF button to turn the meter on. All tags tags
will be displayed.
The meter will go into measurement mode: current tag
reading and calibrated buffers are displayed.
Meter Calibration
From measurement
mode, press and
hold the ON/OFF
button until “CAL”
is displayed.
When “7.01” blinks
on the display, place
the tip of the probe
into a pH 7.01 or
4.01 buffer solution.
For one or two-point calibration using pH 7.01 buffer go to procedure A
For one-point calibration using pH 4.01 buffer go to procedure B
One or Two-Point Calibration with pH 7.01
Thank you for choosing a Hanna Instruments product. Please read this instruction
manual carefully before using this instrument.
For technical support, contact your local Hanna Instruments Office or
email us at tech@hannainst.com.
To find your local Hanna Instruments Office or for additional information on
Hanna Instruments products, visit www.hannainst.com
Meter Overview
Open Reference Junction with removable
sleeve design
Thank You
pH 4.01 will then
blink on the display.
Ignore it and press
ON/OFF button.
Use pH 4.01 to
perform a twopoint calibration.
The value is
recognized and
displayed with the
blinking stability
“Sto” will be
displayed when
the calibration
is saved.
When the reading
is stable, the
stability indicator
will disappear.
“Sto” will be
displayed when
the calibration
is saved.
Meter will exit
to measurement
mode and the
tag will be
Meter will exit
to measurement
mode and the
tags will be
One-Point Calibration with pH 4.01
If pH 4.01 buffer
solution is used
as the first point
the value of the
buffer is recognized
and displayed
with the blinking
stability indicator.
When the
reading is stable,
the stability
indicator will
will be displayed
when the
is saved.
Meter will
exit to
mode and the
tag will be
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