Probe Features
Conical Tip:
The conical tip allows for easy penetration
into damp soil. If the soil is hardened (or stony) it is best
to use an auger (
HI721319
) to make a hole for the pH
electrode to be inserted into.
Open Junction Reference:
The open junction design
consists of a solid gel interface between the soil sample
and the internal Ag/AgCl reference. This interface
prevents silver from entering the sample and makes it
impermeable to clogging, resulting in fast response and
stable reading.
Polyvinylidene Fluoride (PVDF) Body:
PVDF is a food-grade plastic that is
resistant to most chemicals and solvents, including sodium hypochlorite, it is also
resistant to fungal growth. It has high abrasion resistance, mechanical strength, and
resistance to ultraviolet.
Removable Polyvinylidene Fluoride (PVDF) Reference Sleeve:
The PVDF
outer junction sleeve can be removed and cleaned. Once cleaned, a small amount
of supplied gel electrolyte is added and the junction is refreshed, improving the
measurement and extending the life of the tester.
Specifications
Range
0.00 to 12.00 pH
Resolution
0.01 pH
Accuracy
±0.05 pH
Calibration
Automatic, one or two-point
Temperature compensation
Automatic, 0 to 50 °C
Electrode
Built-in probe for specific application
Battery type
CR2032 Lithium-ion (included)
Battery life
Approximately 800 hours of continuous use
Auto-off
8 minutes, 60 minutes or disabled
Environment
0 to 50 °C (32 to 122 °F); RH 95% max
Dimensions
51 x 151 x 21 mm (2 x 5.9 x 0.9“)
Weight
46 g (1.62 oz.)
Functional Description & LCD Display
Liquid Crystal
Display (LCD)
ON/OFF
button
pH probe
Calibration
tags
Recommended
immersion level
Maximum
immersion level
Dear Customer,
Thank you for choosing a Hanna Instruments product. Please read this
instruction manual carefully before using the tester.
For more information about Hanna Instruments and our products, visit
www.hannainst.com or e-mail us at [email protected].
For technical support, contact your local Hanna Instruments Office or e-mail us
Preliminary Examination
Remove the tester and accessories from the packing material and examine it
carefully. If you require any further information, please contact Hanna Instruments
technical support team at [email protected].
Each
HI981030
is delivered in a cardboard box and is supplied with:
•
HI70004
pH 4.01 buffer solution, 20 mL sachet (2 pcs.)
•
HI70007
pH 7.01 buffer solution, 20 mL sachet (2 pcs.)
•
HI700663
Cleaning solution for soil deposits
•
HI700664
Cleaning solution for humus deposits
•
HI9072
Electrode storage solution, 13 mL dropper
•
HI9071
Gelled bridge electrolyte
• CR2032 3V Lithium-ion battery
• Instrument quality certificate
• Instruction manual
Note:
Save all packing material until you are sure that the tester works correctly.
Any damaged or defective item must be returned in its original packing material
with the supplied accessories.
General Description & Intended Use
The
HI981030
Soil pH Tester is designed to measure the pH or acidity of the soil
as a key factor in ensuring strong and healthy plant growth. It features a single
button operation system and is easy to use. It has a compact and waterproof casing
and automatic pH calibration at one or two points. All readings are automatically
compensated for temperature variations with a built-in temperature sensor.
Direct Soil Measurement
Direct soil pH testing offers the benefit of not needing to take soil samples, as the pH
is tested right in the ground.
1. Inspect the pH probe to ensure the bridge electrolyte gel has not dried out. Refill
if necessary.
2. Calibrate the pH probe prior to measurement.
3. Using an auger (
HI721319
) or ruler, make a hole down into the soil (app.
20 cm). The hole needs to be the same depth each time to avoid pH discrepancies.
4. Add some distilled or deionized water to the hole; the soil should be damp but
not saturated.
5. Wash the electrode with tap water and insert into the hole.
6. Allow for the reading to develop or stabilize.
7. After measurement, gently wash off leftover soil (avoid using a cloth or a wipe).
Note:
Direct soil pH testing is not recommended if the ground is stony or hardened
as the electrode can be damaged. To prepare the soil prior to measurement, take a
representative soil sample and add
HI7051
Soil preparation solution.
Preparation
• Remove the protective cap. Do not be alarmed if salt deposits are present. Rinse
the probe with water and blot dry.
• If the glass and / or junction are dry soak the electrode (bottom 4 cm / 1.5 “)
in storage solution for a minimum of 30 minutes.Rinse with water and blot dry.
• Calibrate the electrode before using. For best results is recommended to recalibrate
periodically.
Storage
• To ensure a quick response, the glass tip and junction should be kept moist.
• Replace the protective cap with a few drops of storage solution when not in use.
Do not store the electrode in distilled or deionized water.
Operation
Press the ON/OFF button to turn the meter
on. The tester displays all LCD segments
for a few seconds. The tester will enter
measurement mode, the current reading and
calibrated buffers will be shown.
Low battery
indicator
Stability
indicator
Measurement
unit
Calibration
tags
Calibration
From measurement mode, press and hold the ON/OFF button until “CAL” is
displayed.
For one or two-point calibration using pH 7.01 buffer solution, follow
procedure A.
For one-point calibration using pH 4.01 buffer solution, follow
procedure B.
Note:
It is recommended to calibrate the electrode with buffers at the
temperature it will be used at.
A
B
A
One or Two-Point Calibration with pH 7.01
When "7.01" is displayed, place
the tip of the electrode in pH 7.01
buffer.
When the reading is stable, the
stability icon will disappear.
When "4.01" is displayed, follow
the procedure to the right for a
one or two-point calibration.
One
-P
oint
Press the ON/OFF
button to save
the one-point
calibration.
"Sto" will be
displayed when
the calibration is
saved.
The tester
will return to
measurement
mode and the
calibration
tag will be
displayed.
Two
-P
oint
Place the tip of
the electrode in
pH 4.01 buffer.
The buffer is
automatically
recognized, the
stability indicator
will blink.
Wait until the
measurement is
stable and the
stability indicator
disappears. "Sto"
will be displayed
when the calibration
is saved.
The tester
will return to
measurement
mode and the
calibration
tags will be
displayed.
One-Point Calibration with pH 4.01
B
When "7.01" is
displayed, place the
tip of the electrode
in pH 4.01 buffer.
The buffer value
will be recognized
automatically and
"4.01" will be
displayed.
When the
reading is stable,
the stability
indicator will
disappear.“Sto”
will be displayed
when the
calibration is
saved.
The tester
will return to
measurement
mode and the
calibration
tag will be
displayed.
