Hanna Instruments HI 98109 User Manual
Skincheck Skincheck Skincheck Skincheck
FRONT
LIQUID
CRYSTAL
DISPLAY
pH
SCREW-TYPE
CONNECTOR
pH ELECTRODE
Specifications
Range
Resolution
Accuracy
(@20°C/68°F)
Typical EMC
Deviation
Calibration
Electrode
Skincheck HI1413S/50
Skincheck1
BACK TOP VIEW
ON/OFF
SWITCH
-
+
BATTERIES
HI 1413S/50
COMBINATION
PROTECTIVE
CAP
BATTERIES
COVER
0.00 to 14.00 pH
0.01 pH
±0.2 pH
±0.1 pH
Manual two points
combination pH
electrode (included)
HI 1413B/50
Environment
pH
Battery Type
4/10
7
pH
OFF
ON
Dimensions
Weight
Skincheck 70 g (2.5 oz.)
Skincheck1 90 g (3.2 oz.)
Initial Preparation
The pH electrode is shipped dry.
Prior to using the Skincheck, remove
the protective cap and recondition the electrode by soaking the
tip (2cm/1") in pH 7.01 buffer solution for a couple of hours.
Perform the calibration procedure
as described below and the
meter will be ready for taking
measurements.
0 to 50ºC (32 to
122ºF), 95% RH
2 x 1.4V
Life
3000 hours
of continuous use
66 x 50 x 25 mm
(2.6 x 2 x 1")
Operating Instructions
• Switch the meter on
pH
and remove the protective cap.
• Place the tip of the flat
electrode on the surface to be measured
(skin or scalp).
• For best results, wet
the surface with distilled water or a neutral disinfectant.
• The supplied electrode can
also measure pH in liquids.
Immerse the tip of the electrode (the bottom 2cm/1") into
solution. Stir gently and wait
until the display stabilizes.
• For best results, recalibrate periodically (see below).
• Do not be alarmed if white crys-
This is normal with pH electrodes and they dissolve when
rinsed with water.
• NEVER IMMERSE THE ELECTRODE UP TO THE CONNECTOR.
• ALWAYS KEEP THE CONNECTOR CLEAN AND DRY.
• After use, rinse the electrode
with water to minimize contamination.
• Store the electrode
with a few drops of
HI 70300 Storage Solution
in the protective
cap.
• Always replace the protective
cap after use.
DO NOT USE DISTILLED OR
DEIONIZED WATER FOR
STORAGE PURPOSES.
HI 70300
tals appear around the cap.
Skincheck Skincheck Skincheck Skincheck
Calibration
• Dip the tip of the electrode (2cm/1") of
Skincheck in a sample
of pH 7.01 buffer
(from
HI774P Calibra-
tion Kit
). Allow the
reading to stabilize.
• Use a small screwdriver to adjust the pH
7 trimmer until the
display reads
"7.01 ".
• Rinse the electrode
with water and dip it
in a sample of
pH 4.01. Allow the
reading to stabilize.
• With a small screwdriver adjust the
pH 4/10 trimmer until the display reads
"4.01 ".
• Calibration is now
complete.
ALWAYS USE FRESH
BUFFERS FOR CALIBRATION &
NEVER REUSE THEM.
Battery Replacement
Replace the battery when the display fades or Skincheck cannot be
switched on or segments are
missing.
Remove the battery
cover on the back
of the meter. Insert
2 new 1.4V batter-
BATTERIES
-
+
BATTERIES
COVER
ies while paying attention to their polarity.
Battery replacement must only
take place in a non hazardous
area using the battery types
specified in this instruction
manual.
Accessories
HI 1413S/50 Glass-body, flat tip,
combination pH
electrode, Viscolene,
12mm diameter
with screw-type connector (for Skincheck)
HI 1413B/50 Glass-body, flat tip,
combination pH
electrode, Viscolene,
12mm diameter,
BNC connector with
1m (3.3') cable (for
Skincheck1)
HI 774P Calibration kit
pH7.01 & pH4.01
(30 ml ea.), with
screwdriver
HI 7004L Buffer solution
pH 4.01 (460 ml)
HI 7007L Buffer solution
pH 7.01 (460 ml)
HI 70300L Storage solution
(460 ml)
HI 76504/P2 2x1.4V batteries
Recommendations for Users
Before using this product, make sure that it is entirely
suitable for the environment in which it is used.
Operation of this instrument in residential area could
cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary
steps to correct interferences. The glass flat tip at the
end of the electrode is sensitive to electrostatic discharges. During operation, ESD wrist straps should be
worn to avoid possible damage to the electrode by
electrostatic discharges. Any variation introduced by
the user to the supplied equipment may degrade the
instrument's EMC performance. To avoid electrical
shock, do not use this instrument when voltages at the
measurement surface exceed 24VAC or 60VDC. To
avoid damages or burns, do not perform any measurement in microwave ovens.
Stay in Touch with the Manufacturer!
ISTRSKIN 10/96
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