• Semsons gold coin testing machine, a conductivity tester with a gold coin on the sensor pad and its MS/m reading on the screen
  • Semsons gold coin testing machine kit: tester, padded carry case, charger, cable, copper calibration disc and instruction manual

Semsons Tech

Gold Coin Testing Machine - Conductivity Tester for Gold Coins, Bars and Bullion

Gold coin and bar tester · Reads through capsules · No damage

Full product price

₹1,35,000

Inclusive of GST

Booking amount per unit

Inclusive of GST. Counts toward the full price; the balance of ₹85,000 per unit is due on delivery.

₹50,000

Free delivery · Dispatch in about 35–45 days

A Semsons Tech gold coin testing machine. It checks whether a gold coin or bar is real by its electrical conductivity, with no damage to the piece.

  • Finds a tungsten core hidden under real gold
  • Tests a sealed coin without opening the capsule
  • Shows the reading in MS/m beside the value for that metal
  • For gold, silver, platinum and palladium coins and bars
  • A screening test for bullion, not a karat test

✔ Finds tungsten fakes - tungsten cannot read like gold
✔ Tests through packaging - capsules and blisters up to 3 mm
✔ No damage - no acid, no scratching, no filing
✔ Reading in seconds - in MS/m, beside the expected value
✔ Coins and small bars - about 1/4 oz to 2 oz
✔ Battery powered - over 10 hours per charge

Book through our team on WhatsApp or by phone. We confirm availability, quantity and delivery, and take the booking amount.

 

Security policy

 

Delivery policy

 

Return policy

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Semsons Tech gold coin testing machine guide: parts of the tester, how conductivity testing works, four steps to test a coin, the fakes it finds and who uses it

Semsons Tech Gold Coin Testing Machine - Conductivity Tester for Gold Coins, Bars and Bullion

Checks whether a gold coin or bar is real, without opening the capsule or marking the metal.

The fake gold coins and bars that are hardest to catch have a tungsten core under a layer of real gold. Tungsten weighs almost the same as gold, so the weighing scale passes it, and an acid or touchstone test only checks the gold on the outside. This machine tests the metal by its electrical conductivity. You choose what the piece should be, place it on the sensor pad and read the screen. If the reading does not match the value for that metal, do not buy the piece until it has been checked further.

How It Works

The sensor pad sends a small magnetic field into the coin. The field makes electric currents flow inside the metal. How well they flow depends on what the metal is, and the machine shows it as electrical conductivity in MS/m. Fine gold reads about 45 MS/m and 22K coin gold about 9.7. Tungsten reads about 18.8, so a tungsten core pulls the reading away from where real gold should be. The field reaches up to about 0.65 mm into each face of the coin.

How to Use It

  1. Choose the metal the piece is sold as, for example fine gold or 22K gold.
  2. Place the piece flat in the centre of the sensor pad. A coin can stay in its capsule.
  3. Read the screen. It shows the measured value in MS/m beside the value that metal should give.
  4. Turn it over and test the other face, because each reading covers one side.

What It Protects You From

FakeWhat the reading shows
Tungsten core under real goldTungsten reads about 18.8 MS/m, which matches neither fine gold nor 22K gold, so the value moves off target
Gold plating over brass or copperThe field reaches below a thin plating, so the piece does not read as solid gold
A coin or bar of a lower purity than claimedThe reading does not match the value for the metal you selected
A sealed coin you must not openThe test works through the capsule, so the seal and the packaging stay intact

Conductivity Tester or XRF Analyzer?

Both test gold without damage, but they answer different questions.

Your questionThe machine to use
Is there tungsten or another metal hidden inside this coin or bar?This conductivity tester
Can I check a sealed coin without opening it?This conductivity tester
What karat or purity is this jewellery?An XRF gold analyzer
Which metals, and how much of each, are in this alloy?An XRF gold analyzer, such as the Signet - PC

XRF reads the surface of the metal. Conductivity reaches below the surface. A shop that buys both bullion and jewellery often keeps one of each.

What It Will Not Tell You

  • No karat number. It shows conductivity and whether it matches the metal you selected.
  • It reaches about 0.65 mm into each face. A thick gold shell over a hidden core can sit deeper than that. Check high-value pieces by weight, size and a second method as well.
  • Very small or thin pieces. Coins under about 1/4 oz or thinner than about 0.8 mm are outside its range.
  • Not for jewellery. Rings, chains and pieces with stones are not flat bullion shapes. Use an XRF analyzer for jewellery.

Key Specifications

SpecificationDetails
TypePortable gold coin and bar tester with sensor pad
Testing methodEddy current, non-destructive
ReadingElectrical conductivity in MS/m, beside the expected value for the selected metal
MetalsGold, silver, platinum and palladium
Reference valuesFine gold about 45 MS/m; 986 gold about 25.5; 22K (916) coin gold about 9.7; fine silver about 61; tungsten about 18.8
Measuring depthUp to about 0.65 mm per side on 900 and 916 gold; about 0.35 mm on fine gold; about 0.25 mm on fine silver
Sensor field20 mm diameter
Coin and bar sizeAbout 1/4 oz to 2 oz, depending on the shape and the metal
Minimum thicknessAbout 0.8 to 1 mm
Through packagingCapsules, blisters and foil up to about 3 mm
DisplayColour LCD
BatteryRechargeable, over 10 hours of use per charge, about 2 hours to charge
CalibrationCopper calibration piece supplied
In the boxTester, copper calibration piece, charger and cable, instruction manual, quick guide, padded carry case
Karat readingNot provided

Who Uses It

  • Bullion dealers checking coins and bars before they pay for them
  • Jewellers buying back gold coins and biscuits across the counter
  • Pawnbrokers checking coins and bars before lending against them
  • Coin dealers and collectors testing sealed coins without opening them
  • Vaults and treasury desks spot-checking stored bullion

Booking, Delivery and Returns

TermsDetails
PriceThe full product price and the booking amount per unit are shown at the top of this page, both including GST
How booking worksThe booking amount reserves your unit and counts toward the full price. The balance is due on delivery.
OrderingNot sold through online checkout. Book through our sales team on WhatsApp or by phone.
Quantity1 to 10 units per booking
DeliveryFree
DispatchAbout 35–45 days from booking
ReturnsNot accepted. If it arrives damaged, tell us within 48 hours of delivery.
Manufacturing defectNo standard replacement. If a manufacturing defect is verified on inspection, a replacement may be considered, subject to the product and service terms.
Genuine productYou receive a genuine product supplied by Semsons Tech

Common Questions

How can I check if a gold coin is real without damaging it?

Place it on this tester. It measures the electrical conductivity of the metal with a magnetic field, so nothing is scratched, filed or dipped in acid, and the coin keeps its finish.

Can it detect a tungsten-filled gold bar or coin?

Yes. Tungsten reads about 18.8 MS/m, far from fine gold at about 45 and from 22K coin gold at about 9.7, so a tungsten core moves the reading off the value for gold. The weighing scale cannot find it, because tungsten weighs almost the same as gold.

Can I test a gold coin without taking it out of its capsule?

Yes. It reads through capsules, blisters and foil up to about 3 mm thick, so a sealed coin stays sealed.

Does it tell me the karat or purity?

No. It shows conductivity and whether it matches the metal you selected. For karat and purity, use an XRF gold analyzer.

What size coins and bars can it test?

Coins and small bars from about 1/4 oz up to about 2 oz, depending on the shape and the metal. The piece should be at least about 0.8 to 1 mm thick.

Does it work on 22K coins and on silver?

Yes. You select the metal and the reading is compared with it. 22K coin gold reads about 9.7 MS/m and fine silver about 61. Platinum and palladium can be tested too.

What does MS/m mean?

Megasiemens per metre, the unit of electrical conductivity. The higher the number, the better the metal conducts electricity.

Is one reading enough to call a coin genuine?

It is a screening test. The field reaches about 0.65 mm into each face, so on a high-value piece also check the weight and size and use a second method before you buy.

How much does it cost, and how does booking work?

The full product price and the booking amount per unit are shown at the top of this page, both including GST. The booking amount counts toward the full price, and the balance is due on delivery. Delivery is free.

Can I buy it online?

No. It is not sold through online checkout. Book through our sales team on WhatsApp or by phone, and we confirm availability, quantity and delivery. You can book 1 to 10 units.

How long does dispatch take?

About 35–45 days from booking.

Can I return it?

No, returns are not accepted. If a manufacturing defect is verified on inspection, a replacement may be considered, subject to the product and service terms.

Support

EMI options are available through partner banks. Service across 16+ Indian cities.

Sales: WhatsApp +91 98216 12340 | Wholesale: WhatsApp +91 80823 38010

Semsons Tech - Where Quality Speaks For Us. Since 1978.

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