Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
Model: Multi Tester JE
Thank you for buying this Multi Tester of SAUTER. We
hope you are pleased with your high quality product and
with its functional range. If you have any queries, wishes or
helpful suggestions, do not hesitate to call our service
number.
The Multi Tester utilises the feature that diamonds have a
very high thermal conductivity. So it can effectively and
quickly distinguish natural diamonds from all kinds of
diamond simulations and metals, except synthetic
moissanites (a man-made stone), which have a thermal
conductivity similar to diamonds.
The lights (and a distinctive sound which accompanies
each light) will indicate Diamond, Moissanite, Metal Alert
Metal Alert usually because the jewellery has been
touched by accident). Other stones like ruby, sapphire,
topaz give no reaction at all (including glass and cubic
zirconia). These various readings (Diamond, Moissanite,
Metal, no reaction) show that the Multi Tester works
accurately on the largest number of gemstones.
Table of contents
1. Features
2. Specifications
3. Components of the Multi Tester
4. Battery and power
5. Important notes before use
6. Cleaning procedures
7. Testing Instructions
8. The readings
9. Diamond testing (thermal conductivity)
10. Moissainte Testing (electrical conductivity)
10. Other uses of the UV light
11. Using the UV light
12. Maintenance
13. Declaration of Conformity
1. Features
- 360 degree illumination around the front of the Multi
Tester allows the user to see the test results clearly and
comfortably without having to angle the tester.
- Fitted with a 0.6mm diameter fine retractable
thermoelectric sensor, giving consistent pressure when
being placed on the surface of a gemstone, ensuring
accurate results, even on tiny stones.
- Non-slip rubber coated body allows a better handling
during the tests.
JE
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
- The built-in metal alert lets you know if the jewellery
setting or the stone holder has been accidently touched. It
helps the user to reduce false readings
- There can be tested stones mounted in jewellery or loose
stones (stone-holder included)
- There are different sounds for diamond, Moissanite and
metal which facilitate to distinguish the test results without
having to look at the lights
- An integral UV light can be used during a test to give
more accurate readings when testing Moissanites (it
excites the atoms and improves electrical conductivity). It
can also be used to observe the fluorescence in diamonds
for the purpose of colour grading.
- There are no waiting times between the tests
- Designed for left and right handed users.
- Fully automatic, requires no calibration by the user
- powered by one 9V monobloc standard battery
- Alarm sounds after a few minutes if the power is
accidentally left on and it automatically powers off
-The diamond tester can be connected with an AC adapter
for a long time indoor use (not included in delivery). It has
got a 2 years manufacturer’s warranty.
2. Specifications
Working voltage: 9V battery (approximately 3 hours of
continuous use, based on high quality alkaline batteries).
Continuously used UV light source will give an
approximately 1.5 hours of use) or with AC adapter, 110V240V, DC 9V, optional available.
- Sensor’s warm-up time: about 45 seconds
- Operation temperature: 18°C to 27°C
- Recommended Humidity: 45% to 75%
JE-BA-e-1211 1
Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
- Dimensions: 177mm x 30mm x 24mm
- Net weight: 65g (without battery), 102g (including battery)
3. Components of the Multi Tester
(L x W x D)
JE
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
used immediately afterwards, it will be powered off
automatically.
When the WAIT light flashes, the battery is low and it
should be changed immediately. It should always be
changed immediately as soon as it flashes. Tests should
not be performed with a low battery.
4. Battery and Power
The Multi Tester can be powered either by a universal AC
power adaptor (optional item) or one 9V PP3 battery (not
included in delivery).
If using the universal power adaptor, only the 9V DC 0.5A
(centre negative) original one from your distributor
has to be taken, which can be purchased separately.
Using an incorrect adaptor can damage the Multi Tester
beyond repair, which will not be covered by warranty.
If using a battery, it is recommended to buy a good quality
9V alkaline battery like Duracell or UCAR, which will grant
about 2 ½ hours of continuous use or 5 hours without
using the UV-light. Ordinary “super” or “high power”
batteries may not be suitable.
On the first picture on the left, above, you see how to
remove the battery cover.
On the second one on the right, above, the new battery is
connected with the contacts of the Multi Tester.
The third picture down below on the left shows how to
insert the battery into the compartment.
The last one shows how the compartment is closed again,
by taking care not to catch the wire.
If the Multi Tester is accidently left powered on, then after
10 minutes a continuous alarm will sound and if it isn’t
If the Multi Tester is not going to be used for an extended
period of time (more than one month), the battery has to
be removed. Never leave a worn out or old battery inside
as it may corrode and cause damage to the Multi Tester.
This is not covered by warranty.
5. Important notes before use
Using the Multi Tester for the first time, or if it hasn’t been
used for a week or more, the sensor tip has to be cleaned
to ensure that the tester shows consistent and accurate
readings (see also “cleaning procedures”).
Before any test is carried out, the gemstone must be clean
and dry. This has to be done with a jewellery cloth or dry
tissue. There is no need to elaborate cleaning procedures
or to take special cleaning fluids.
This instrument has been carefully calibrated during the
manufacturing process, it doesn’t require any further
adjustment or interventions.
When testing small gemstones (10 points or below), it is
important to allow the gemstones to cool down before
further tests are carried out, to gain optimum accuracy in
tests.
If you are suspecting any doubts during the tests in your
readings, it is advisable to take any more tests, to be
assured that the gemstone has got enough time to cool
down during the tests. Gemstones become hot when
tested, which gives a false reading.
The Multi Tester will give accurate readings when it will be
used at the recommended room temperature of 18°C to
27°C (64°F to 81°F). It should be assured that the
gemstone has been adjusted to the recommended room
temperature before using the tester.
Before the Multi Tester was quality assured and sold, it
was subjected to thorough and extensive laboratory tests
until its manufacturing process was started.
It will generally give a clear and reliably reading of the
gemstone being tested. If there are any doubts in the tests,
supporting tests should be carried out.
Either the manufacturer or any of its subsidiaries,
distributers or third parties shall be liable under no
JE-BA-e-1211 2
Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
circumstances for any direct or indirect damages resulting
from the use of this instrument.
6. Cleaning procedures
There are two important cleaning procedures that should
be performed when using the Multi Tester:
Cleaning the sensor tip
Using the tester for the first time or if you haven’t used it
for a week or more, then the sensor tip should be cleaned.
By doing this, it will be assured that the tester shows
consistent and accurate readings.
How to clean it:
1. You will need a clean sheet of standard paper.
2. Ensure that the Multi Tester is switched off.
3. The sensor cap (which protects the tip), has to
be removed, see fig. 1
4. The tester has to be held with the sensor tip at a
right angle or perpendicular to the paper surface,
see fig. 2
5. 5. The sensor tip has to be gently rubbed in a
circular motion without retracting the sensor tip,
see fig.3
6. The same motion has to be performed a few
times to complete the cleaning process.
7. Then the tester is ready for use
Cleaning the gemstone:
Before the first test is performed, the gemstone has to be
clean and dry. This has to be done with a jewellery cloth or
a dry tissue. There is no need to elaborate cleaning
procedures using special cleaning fluids. If you do so, just
use an alcohol such as isopropyl or any other alcohol.
The slightest amount of grease will give false readings on
Moissanites.
Once cleaned, the stone needs to cool down for a minute
before testing, as the cleaning procedure can cause the
stone to be heated a little bit from your fingers and friction.
7. Testing Instructions
JE
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
1. The sensor protective cover has to be removed and the
Multi Tester has to be switched on. It has to be waited until
the red waiting light turns off and the green light starts
shining. Now it is READY for use.
2. The Multi Tester has to be held in the way that the index
finger is touching one of the metal touch-plates and the
thumb is touching the other, ensured that there is a firm
contact.
The probe tip has to be held against the gemstone,
applying sufficient pressure for accurate readings. There
will be a reading result within 2 seconds. While testing,
there should be a steady and constant contact between
the sensor tip and the gemstone.
It may not be pressed so hard that the tip bends or breaks.
It there is applied too much force, this is not covered by
warranty!
The tip of the Multi Tester may not be touched. In the
pictures above it is shown how to hold the tester correctly
and how it is wrong
Testing the stone two or three times in succession will
make it warm and a warm diamond will no longer register
“warm”. So it has to be waited for two or three minutes
between the tests to allow the stone to cool down.
The recommended ambient testing temperature is from
18°C to 27°C and the ideal humidity is 45% to 75%. The
temperature of the stone should be the same as the
ambient temperature. Exceeding the ambient temperature
of 27°C, the test result may be incorrect. Therefore, this
tester cannot be used outside in the cold and damp or in
direct sunlight at elevated temperatures.
to hold it.
JE-BA-e-1211 3
Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
When testing mounted jewellery/ gemstones, they have to
be held with one hand and the tester with the other hand.
When testing a loose gemstone, it has to be placed into a
suitable hole on the metal stone-rest (included in delivery),
preferably on a flat surface. So the stone can’t drop out.
The tester has to be held with one hand. The stone-rest
has to be touched with the index finger of the other hand.
The sensor tip has to be positioned at a right angle to the
gemstone and always at the “table” (top) of it.
For a correct operation, a “circuit” has to be created
between the hand holding the tester and the other one
holding the jewellery or metal stone holder. Therefore the
thumb and forefinger must always be positioned on the
metal panels located on both sides of the tester.
The hands may not be insulated (by wearing gloves) and
the fingers have to be clean.
Also the item being tested may not be insulated (e.g.
costume jewellery set in plastic or metal covered with
lacquer).
8. The readings
JE
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
The red light will appear for another stone (simulant) and
typically gemstones with a higher thermal conductivity,
such as a ruby, sapphire or topaz.
Gemstones with a low thermal conductivity, such as glass
or cubic zirkonia, may not always show a reading on the
Multi tester.
9. Diamond testing (thermal conductivity)
The tip of the tester warms up diamonds (and to a less
extent, rubies and sapphires). Initially, they are “cold”. A
crude test is to touch the stone against your lip or
underside of your wrist to feel this “coldness”. The Multi
Tester measures this “coldness”, e.g. how quickly the heat
from the tip is “drawn” into the stone. Therefore it is most
important that both, the stone and the Multi Tester are at
room temperature. Otherwise, any cold stone (including
any large ruby or sapphire which is “cool”) will register
“diamond”.
Conversely, a warm diamond will register “not diamond”.
Diamonds become warm, being heated by the tip of the
Multi Tester, so when testing the same stone, it has to be
waited two or three minutes between the tests (especially
with small stones) for the stone to cool down. Placing the
stone on a cool surface helps to cool the stone.
10. Moissanite testing (electrical conductivity)
The stone being tested must be absolutely clean. It should
be preferably cleaned with a cotton wool bud soaked in
alcohol. A layer of grease can give a false reading, it is not
sufficient to wipe the stone with a clean cloth.
The Moissanite test is not reliable for stones under 3 points
(note: 72pt= 1inch= 2.54cm), the current can spark onto
the setting of the stone and gives a false reading.
The test tip has to be placed exactly in the centre of the
stone. The sensor and the stone must be seen clearly, in
doubts, a magnifier can be used.
If there isn’t a good close-up eyesight (or an eyeglass) and
a steady hand, there will be difficulties in testing stones
under 10 points.
The reason for holding the tester in the way that the metal
plates are touched with one hand and the setting of the
plate (or metal stone holder) with the other is that the
electrical resistance is measured from the sensor, all the
way through your body and back to the stone. Therefore, if
you are insulated (by wearing gloves) you will get a false
reading. The Moissanite tester is for testing diamond-like
stones, household objects may not be tested.
11. Using the UV light
The quality (wavelength) of the UV light in the Multi Tester
is particularly good for the UV testing.
It will give more accurate readings on Moissanites (UV
light excites the atoms and improves the electrical
conductivity).
-The UV light button has to be pressed to turn it on.
JE-BA-e-1211 4
Sauter GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@sauter.eu
Instruction Manual
- Before the sensor is placed onto the gemstone, the UV
light first has to be shined onto the stone for a few
seconds.
-It can also be left on and used while other tests are
performed.
Note: If the UV light will be left on for a longer period of
time, life of battery will be reduced respectively.
General information about UV light
UV light is usually used for observing the fluorescence
(glow) in UV security marks, which are otherwise invisible.
These can be found in banknotes, cheques, cheque cards
and anything marked with a UV security marker.
UV light is also widely used to detect modern surface paint
on antique porcelain or paintings, signatures added to
drawings and paintings, writing on letters and postcards
which are too feint to see in natural light. On Uranium
glass (Vaseline glass) it makes the entire object glow
vividly. In all cases, it helps to use the light in dim (if not
dark) conditions.
Not all diamonds fluorescent to the same extent, not all
diamonds fluoresce actually. Therefore, although UV light
is not diagnostic, you can make use of the fact that
diamonds fluoresce randomly. If there are several stones
and they all react in exactly the same way, it is unlikely that
they are diamonds. The fluorescence (and any
phosphorescence- a glow that remains after the UV light
has been turned off) must be observed in darkness, e.g. a
dark room or a special “dark cabinet”.
UV light is also used to help colour-grade diamonds, but it
is only used by professional diamond dealers or specialist
jewellers who know how to colour-grade diamonds in the
first place. White diamonds which fluoresce under UV light
also fluoresce under the UV that is present in daylight and
this can make a stone appear a better colour than it really
is, and so the diamond grader may wish to downgrade it by
one or two colours.
SAUTER GmbH provides a limited quality warranty of 24
months dated from the date of purchase, provided that the
tester has been used in normal environment and that its
use conformed to the operation provisions as mentioned
above. If there are defects in parts or technology under
normal using conditions, we will repair or replace the tester
free of cost. The quality warranty can only be applied to
the original purchaser of the tester. The invoice should be
kept as a proof.
We won’t be responsible for the consequences caused by
wrong operation or unsuitable use.
12. Maintenance
- Sensor and wire tip should be handled with extreme care,
especially when removing the protective cap from the
sensor ((if bent or broken, the Multi Tester cannot be
repaired).The protective cap always has to be put on
again, if the tester is not in use. The wire tip may not be
damaged, because this is not covered by warranty.
JE
Tel: +49-[0]7433- 9933-199
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
- A worn battery may not be left in the battery
compartment, as it may corrode and damage the tester,
which is also not covered by warranty.
- If the Multi Tester is not going to be used for an extended
period of time (several weeks or more), the battery has to
be removed.
- A flashing “Wait” light means LOW BATTERY.
- If an universal power adaptor is used (optional item,
which can be purchased separately), this must be 9V DC
0.5A
work, or it will be burned out. None of these facts is
covered by guarantee.
- These warranty conditions will have to be noted for this
Multi Tester regarding abuse, misuse as well as
unauthorised repairs.
Only manufacturing defects and/ or part failures are
covered by warranty.
13. Declaration of Conformity
(centre negative) otherwise the tester won’t
JE-BA-e-1211 5
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