Hanna Instruments HI 99181 User manual

HI99181
Portable Waterproof
Skin pH Meter
INSTRUCTION MANUAL

Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before
using this meter.
This manual will provide you with the necessary
information for correct use of this meter, as well as a
precise idea of its versatility.
If you need additional technical information, do not
hesitate to e‑mail us at [email protected] or view
our worldwide contact list at www.hannainst.com.
Dear
Customer,
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner, Hanna Instru-
ments Inc., Woonsocket, Rhode Island, 02895, USA.

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TABLE OF CONTENTS
Table of Contents......................................................
Preliminary Examination ...........................................
General Description and Intended Use........................
Main Features..........................................................
Specifications...........................................................
Display Description ...................................................
Operational Guide ....................................................
Meter Setup.............................................................
Battery Replacement.................................................
Accessories...............................................................
Electrode Maintenance..............................................
Certification..............................................................
Recommendations for Users ......................................
Warranty .................................................................
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5
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15
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8
16
19
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3
18
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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 complete with:
• HI14143/50 pH/temperature probe with flat tip,
50 mm‑long body, DIN connector and 1m (3.3’) cable
• pH 4.01 & 7.01 Buffer sachets
• HI700620 Cleaning and disinfection solution for skin
residual (1 sachet)
• HI700621 Cleaning solution for skin grease and
sebum (1 sachet)
• 100 mL beaker (1 pcs.)
• Alkaline batteries: 1.5V AAA (3 pcs.)
• Rugged carrying case
• Calibration certificate of meter
• Calibration certificate of probe
• Instruction manual
Note: Save all packing material until you are sure that
the meter functions correctly. All defective items must
be returned in the original packing together with the
supplied accessories.

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HI99181 is a light weight, portable, pH and temperature me‑
ter supplied with a specially designed pH electrode intended
for the direct determination of pH on skin and scalp.
Researchers monitoring the compatibility between skin and
cosmetics or pharmaceuticals use pH as essential marker of
compatibility. The skin mantle has an acidic pH, ranging from
pH 4 to 6. The acidic pH is a deterrent toward harmful mi‑
crobes, pollution, and toxins. Age, genetics, sweat, and mois‑
ture can alter the pH of skin. Products are constantly created
to restore the pH balance of skin and a reliable pH measure‑
ment of skin provides the scientific metrics.
The HI99181 portable pH meter together with a HI14143/50
combination pH electrode (when immersed in a drop of water
on the skin surface), can determine the pH of the skin with
high accuracy and repeatability.
The HI99181 features two button operation and is simple
to use. The HI99181 has a waterproof and compact casing,
large dual‑line display, and automatic pH calibration at one
or two points.
The HI14143/50 offers numerous features that improve pH
testing for skin measurements. The flat tip of the HI14143/50
provides optimal contact between the sample and the sen‑
sor. The HI14143/50 features low resistance pH glass that
responds quickly to the sample. It also has an open junction
design and utilizes a non‑flowing gelled reference electrolyte
so there is no variability in flow rate affecting the measure‑
ment. Both the pH sensing surface and reference junction
come into intimate contact with the skin and equilibrate
quickly and reproducibly. It also has a lower profile for easier
handling compared to laboratory sensors; the glass body is
just 50 mm in length. The HI14143/50 pH electrode has a
built‑in temperature sensor for temperature compensated pH
and temperature readings and contains an integral pH sen‑
sor preamplifier to provide stable measurements in electrically
noisy environments.
GENERAL DESCRIPTION and INTENDED USE

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Main features:
• Simultaneous pH and temperature measurements on a
large dual‑line LCD display
• Automatic pH calibration at one or two points within
two memorized buffer sets (standard or NIST)
• Selectable temperature unit (°C or °F)
• Electrode condition indicator
• mV of pH measurement for electrode check
• HI14143/50 dedicated pH with integral temperature
sensor
• Probe quick connect system
• Battery life indication and low battery detection
• Keystroke confirmation tone
• Auto‑off function
• Waterproof casing IP67
MAIN FEATURES

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SPECIFICATIONS
Range*
‑2.00 to 16.00 pH / ‑2.0 to 16.0 pH
±825 mV (pH‑mV)
‑5.0 to 105.0 °C/23.0 to 221.0 °F
Resolution
0.01 pH / 0.1 pH
1 mV
0.1 °C/0.1 °F
Accuracy
@ 20°C / 68°F
±0.02 pH / ±0.1 pH
±1 mV (pH‑mV)
±0.5 °C up to 60 °C; ±1.0 °C outside
±1.0 °F up to 140 °F; ±2.0 °F outside
Temperature
compensation
Automatic
‑5.0 to 105.0 °C/23.0 to 221.0 °F
pH Calibration
Automatic, 1 or 2 point selectable buffer
set Standard: 4.01;7.01;10.01 or
NIST: 4.01;6.86;9.18
Probe (included)
HI14143/50 preamplified pH and
temperature probe with flat tip 50
mm‑long body, DIN connector and 1 m
(3.3’) cable
Battery type / life 1.5V AAA (3 pcs.)
approx. 1400 hours of continuous use
Auto‑Off user selectable: after 8 min, 60 min or
disabled
Environment 0 to 50 °C (32 to 122 °F)
RH max. 100%
Meter Dimensions 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”)
Meter Mass
(with batteries) 196 g (6.91 oz.)
Case Ingress
Protection Rating IP67
* the HI14143/50 is limited to be used from 0 to 12 pH and
from 0 to 50 °C temperature (32 to 122 °F).

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1 Automatic Temperature Compensation indicator
2 Stability indicator
3 Battery percentage
4 Electrode condition indicator
5 Low battery indicator
6 Measurement unit
7 Primary LCD
8 Temperature unit
9 Secondary LCD
10 Meter modes indicator
11 pH calibration buffer(s) used
DISPLAY DESCRIPTION
Each meter is supplied with batteries. Before using the
meter for the first time, open the battery compartment
and insert batteries, observing the polarity (see “Battery
Replacement“).
TO CONNECT THE ELECTRODE
With the meter turned off, connect the HI14143/50 probe
to the DIN socket on the bottom of the meter by aligning the
pins and pushing in the plug firmly. Remove the protective
cap from the probe before taking any measurements.
OPERATIONAL GUIDE

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OPERATIONAL GUIDE
TO TURN THE METER ON
To turn the meter ON, press the button on
the front of the meter. If it does not turn on, make
sure that the batteries are properly installed in their place.
The meter is provided with an active acoustic signal when
a key is pressed. At start‑up the meter displays all LCD
segments for a few seconds, followed by the percentage
indication of the remaining battery life, the meter enters
the normal measurement mode.
Note: The meter detects the presence and the type of the
probe at its input.
- If the probe is not connected the message “NO”
”PROBE“ appears alternatively on the secondary LCD
with “---“ blinking on the first LCD line.
- If the probe is not compatible “WRONG” ”PROBE“
message appears alternatively on the secondary LCD
with “---“ blinking on the first LCD line.
- If the readings are out of range, the nearest range
limits are displayed blinking (E.g. -2.00 pH -5.0 °C).
TO SELECT THE MEASUREMENT RANGE
While in measurement mode, press the SET button to select
pH or pH‑mV measurement on the first LCD line.
Battery life
Measurement
mode
LCD
check up
→ →
→
Electrode
check

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TO FREEZE THE MEASUREMENT VALUES
While in measurement mode, press and hold the SET
button until “HOLD“ appears on the secondary LCD. The
“HOLD“ remains for 1 second and reading of pH, mV
and temperature will be frozen on the LCD with“H” blinking.
Press any button to resume active measurements.
TO ENTER CALIBRATION MODE
Press and hold the button until ”POWER” and tag
is replaced by “STD“ and tag. Release the button.
TO ENTER SETUP MODE
Press and hold button until “STD“ and tag is
replaced by “SETUP“ and tag. Release the button.
TO TURN THE METER OFF
Whileinmeasurementmode,pressthe button.”POWER”
and tag will appear. Release the button.
pH MEASUREMENT & CALIBRATION
Make sure the meter has been calibrated before use.
If the probe is dry, soak it in HI70300 storage solution for
30 minutes to reactivate it. If fouled, clean the electrode
by soaking in cleaning solution for
20 minutes, then rinse the tip and
soak in storage solution at least
30 minutes before use. Rinse the
electrode off well and shake off
excess droplets. Recalibrate before using. Submerge
the probe in the sample to be tested while stirring
it gently. Wait until the tag on the LCD disappears.
The LCD displays the pH value (automatically compensated
for temperature) on the primary LCD, while the secondary
LCD displays the sample temperature.
OPERATIONAL GUIDE
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