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Presidium
Multi-Tester III
(PMuT III)
User Handbook
(English)
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I. Disclaimers, Exclusions and Limitations
of Liability pg. 03
II. About this book pg. 04
III. About your Presidium Multi-Tester III pg. 05
IV. IMPORTANT NOTICE pg. 07
1. GETTING STARTED with your Presidium
Multi-Tester III pg. 08
2. PERFORMING A TEST with your Presidium
Multi-Tester III pg. 12
3. READING TEST RESULTS on your
Presidium Multi-Tester III pg. 14
4. TAKING CARE of your Presidium
Multi-Tester III pg. 15
Contents
(English Version)
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I. Disclaimers, Exclusions and Limitations of Liability
PLEASE READ AND NOTE PRESIDIUM WARRANTY
TERMS AND CONDITIONS as stated in the warranty
card. Presidium warranty for its testers are subject to
proper use by its users in accordance with all the terms
and conditions as stated in the relevant user handbook
and shall cover only manufacturing defects.
Due to continuous product improvement, Presidium
reserves the right to revise all documents including the
right to make changes to the handbook without notice and
without obligation to notify any person of such revisions or
changes. Users are advised to check Presidium’s website
at http://www.presidium.com.sg/ from time to time.
Presidium shall not be responsible for any damage or
loss resulting from the use of this tester or handbook, and
under no circumstances shall Presidium, its manufacturer
or any of its subsidiaries, licensors, distributors, reseller,
servant and/or agent be liable for any direct or indirect
damages, resulting from the use of this tester.
TO THE MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, under no circumstances shall
Presidium, its manufacturer or any of its
subsidiaries, licensors, distributors, reseller, servant
and/or agent be responsible for any special, incidental,
consequential or indirect damages howsoever caused.
The tester or Presidium Multi-Tester III (PMuTIII)
referred to in this handbook is provided and/or sold on
an “as is” basis. Except as required by applicable law, no
warranties of any kind, either expressed or implied,
including, but not limited to, the implied warranties of
merchantability and tness for a particular purpose.
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II. About this book
Thank you for purchasing the Presidium Multi-Tester III
(“PMuTIII” or “tester”).
This handbook is designed to help you set up your tester
and describes all you need to know about how to use
your tester accurately and take care of it in line with its
requirements. Please read these instructions
carefully and keep them handy for future reference.
This book also contains the terms and conditions in
relation to the use of the tester including the Disclaimer,
EXCLUSION and Limitation of Liability clauses stated
above in Section I.
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III. About your Presidium Multi Tester III
The Presidium Multi Tester III has been developed to help
distinguish between colorless diamonds and moissanite
using the combined principles of thermal and electrical
conductivity.
The measuring probe with electronic circuitry is
designed to detect and segregate data collected from
the gemstones via a customized micro-controller. The
information gathered will be displayed within seconds.
The Presidium Multi Tester III has been subjected to
thorough and extensive laboratory tests, and will
generally give a clear and reliable reading of the
gemstone being tested under proper use. However, you
are advised to conduct further supporting tests.
This tester was designed with the following
objectives:
• Help in the identication of diamonds and moissanite
with a single instrument;
• Provide fairly consistent and reliable test results under
proper use;
• Enhanced ergonomic features, such as visibility of
test results, maximum grip comfort, ease of use and
portability.
The Presidium Multi Tester III features the following:
• Retractable thermoelectric probe tip that ensures
constant pressure between probe tip and gemstone
• Industry’s thinnest probe tip (0.6mm) for testing
gemstones as small as 0.02ct
• Metal alert buzzer to ensure that probe tip is in contact
with gemstone during testing
• No waiting time between tests
• Ergonomic design with rubberized anti-slip grip for
better handling during testing
• 180-degree multi-viewing LED display
• International voltage compatibility
• Low battery indicator
• Automatic power off
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1 Retractable Probe Tip
2 Power Indicator LED
3 Display Panel
4 Battery Compartment
5 Adaptor Inlet
6 ON/OFF Switch
7 Ergonomic Grip
8 Probe Protective Cap
Included in your package:
• Presidium Multi Tester III
• Metal stone rest
• User handbook
• Warranty card
• Protective carrying case
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IV. IMPORTANT NOTICE
• Due to the testing methodology, this tester is not
intended to test for any colored diamonds, such as
blue and black diamonds, as the electrical conductivity
of these colored diamonds differs from colorless
diamonds.
• Keep the tester dry. Precipitation and all types of
liquids or moisture can contain minerals that will
corrode electronic circuits. If your tester gets wet,
remove the battery, and allow the tester to dry
completely before replacing it.
• Do not use, store or expose the tester in dusty and
dirty areas. Its moving parts and electronic
components can be damaged.
• Do not use, store or expose the tester in hot areas.
High temperatures can damage or shorten the life of
the tester , damage batteries, and warp or melt certain
plastics.
• Do not use, store or expose the tester in cold areas.
When the tester returns to its normal temperature,
moisture can form inside the tester and damage
electronic circuit boards.
• Do not attempt to open the tester other than as
instructed in this handbook.
• Do not drop, knock, or shake the tester. Rough
handling might break internal circuit boards and ne
mechanics.
• Do not use harsh chemicals, cleaning solvents, or
strong detergents to clean the tester.
• Do not paint the tester. Paint can clog the moving parts
and prevent proper operation.
If the tester is not working properly, kindly contact
Presidium Customer Service at service@presidium.com.
sg or:
Presidium Instruments Pte Ltd
No. 6 Penjuru Lane
Singapore 609187, Singapore
(65) 6379 5000
Attn: Customer Service Executive
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1. GETTING STARTED with your Presidium Multi Tester III
Powering up your Presidium Multi Tester III
This tester can be powered by either the use of an AC
adaptor (optional item sold separately) or through the use
of batteries. If AC adaptor is used, connect one end of
the AC adaptor to the tester (Fig. 1.1). and the other end
directly into an electrical outlet. Please ensure that only
the adaptor supplied by Presidium is used.
If batteries are used (3 x AAA batteries), take note of the
positive (+) and negative (-) directions of batteries when
inserting the batteries into the tester (Fig. 1.2). The use
of alkaline batteries is preferred, as it should generally
give approximately two and a half hours of continuous
operation, while the use of ordinary batteries will give a
shorter working life.
Fig. 1.1
Fig. 1.2
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Turning on your Presidium Multi Tester III
Remove the protective cover from the probe tip (Fig.1.3).
Press the [ON/OFF] button located at the back of the
tester (Fig. 1.4). and wait for about 20 seconds to warm
up the instrument.
Fig. 1.3
Fig. 1.4
Fig. 1.5
While in this preparation mode, a Green light will blink
continuously. The light will stop blinking when it is
“READY” to be used (Fig. 1.5).
The tester will shut down automatically after 10 minutes
of inactivity.
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Calibration
All testers have been calibrated during the manufacturing
process and no further adjustment or user intervention to
the tester is required.
Self-calibration should not be attempted. To minimize
any risks associated, users should contact Presidium at
service@presidium.com.sg or its service center for
assistance. In the event that users require the manufacturer
to re-calibrate the unit, the users will bear the associated
to/fro freight cost for the shipping of unit to the service
center.
Recommended testing conditions
The gemstone should be clean and dry before testing.
However, elaborate cleaning procedures are not normally
necessary (Fig. 1.6).
Fig. 1.6
The recommended testing temperature is 18°C – 27°C
or 65°F- 80°F Please allow the gemstone or jewelry
piece to adjust to room temperature prior to testing.
Exposure and/or operation of the tester outside the room
temperature would affect the results and performance of
the tester.
Battery information
Do not leave worn out batteries in the battery compartment
as the batteries may corrode, leak or damage the tester.
Batteries should be removed when the tester is expected
to be stored for an extended period of time.
To prevent inaccurate readings, replace with new battery
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Fig. 1.7
Fig. 1.8
Gently rub the table of gemstone against the
tissue/jewellery cloth and place the gemstone on the
centre of the Test Pad (Fig. 1.8).
To prevent inaccurate readings, replace with new batteries
as soon as the low battery indicator lights up or starts to
blink. A test should not be performed when the battery
power is low or weak.
Batteries do not have to be removed when the AC adaptor
is in use.
Cleaning your gemstone prior to testing
Prepare a clean tissue. Carefully retrieve the gemstone
with tweezers and place the gemstone face down on the
table (Fig. 1.7).
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2. PERFORMING A TEST with your Presidium Multi Tester III
Place the tip of the probe pen against the gemstone and
press the test button. Apply sufcient pressure on the tip
for correct reading.
For mounted jewelry or gemstones:
Hold the jewelry or gemstone with one hand and the
tester with the other hand (Fig. 2.1). For proper
operation of the tester, the thumb and index nger must
always be placed on the metal-plated serrated part
located on both sides of the tester at all times. Care
should be taken when testing mounted jewelry. User
must ensure that the stones are securely mounted before
conducting a test as gap between stone and setting might
lead to inaccurate reading.
Fig. 2.1
Fig. 2.2
For testing loose gemstones:
Place the gemstone on the metal stone rest and hold the
metal stone rest with one hand while holding the tester
with the other hand (Fig. 2.2).
Tips for using your Presidium Multi-Tester III
The probe tip must be placed at a right angle or
perpendicular to the facet of the gemstone for an
accurate reading.
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Fig. 2.3
Tests should be conducted on the table of the gemstone.
In the event of any doubt, kindly test on the girdle of the
gemstones instead.
For proper operation of the tester, ngers must be placed
on the rubber pads located on both sides of the tester at
all times.
To achieve optimum accuracy for tests involving very
small mounted gemstones (1.2 mm exposed diameter
and below), it is extremely important that no contact is
made on any mounted/ metal part of the jewelry piece.
The test results will likely result in confusion, as metal
is highly conductive and results may indicate that a
Moissanite is detected instead.
To achieve optimum accuracy for tests involving very
small gemstones (10 points and below), it is important
to allow the gemstone to cool down before subsequent
tests.
It is advisable to take multiple readings if any doubt exists
regarding the test results indicated.
Cleaning the probe tip
Please note that if the tester is being used for the rst
time, or if the tester has not been used for a week, it is
advisable to clean the probe tip using a piece of paper to
attain a consistent and accurate reading.
• Ensure the unit is switched off.
• Hold the probe pen with the pen tip forming a
right-angle (90-degree) with any paper or stone rest
(as provided). Gently move in a circular motion without
retracting the tip (Fig. 2.3).
• Repeat the same motion several times. The cleaning
process is completed and the tester is now ready for
use.
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3. READING TEST RESULTS on your Presidium Multi Tester III
The test results are indicated as follows:
1. Red LED lights up:
• Gemstone with high thermal conductivity such as
sapphire or topaz is detected.
• Gemstone with low thermal conductivity such as
glass or cubic zirconia will not give any reading on
the tester.
2. Yellow LED lights up:
• Moissanite is detected.
3. Green LED lights up:
• Diamond is detected with a continuous audible beep.
• Metal is detected with an intermittent beep at “Metal”
segment.
Note: For stones with lower thermal inertia, the
Presidium Gem Tester / Color Stone Estimator (PGT/
CSE) or the Presidium Duo Tester (PDT) can be used to
further differentiate the type of simulants as they detect
a wider simulant range.
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4. TAKING CARE of your Presidium Multi Tester III
• The probe and wire tip is extremely sensitive and
should be handled with care, especially during the
removal of the protective cap from the pen tip. Always
replace the protective cap of the pen tip when the
probe is not in use. Caution should be taken so as
not to damage the probe and wire tip.
• Do not leave worn out batteries in the battery
compartment as the batteries may corrode, leak or
damage the tester. Batteries should be removed
when the tester is expected to be stored for an
extended period of time.
Your tester is a product of extensive design and
craftsmanship and should be treated with care.
Thank you for taking time to go through the user
handbook which will enable you to understand your
recent purchase better.
Presidium also recommends that you register your
warranty by sending the warranty registration card to us
or registering online at http://www.presidium.com.sg/
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