iGem Support Center

Gold, Platinum and Silver Testers 22

• Tri Electronics G-24 Gold Tester keeps switching modes
• Can I use any AC adapter with my Tri Electronics Gold Tester?
• Tri-Electronics GXL-24 Pro and M24 Brief Comparison
• Do I need an AC adapter for the Tri Electronics GXL-24 Gold Tester?
• There is gel behind my Tri Electronics refill's plunger

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Diamond and Moissanite Testers 10

• Can a diamond tester recognize artificial (man made, lab created) diamonds?
• Do electronic diamond testers need testing liquid?
• GemOro UltraTester II & Pro-D Troubleshooting
• When should I use a moissanite tester?
• Is a diamond moissanite tester better than two separate testers?

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Gemstone Testers 7

• I can't find the probe cap for my Presidium PGT/PDT Tester
• Where is the simulant kit for the Presidium PDT Tester?
• Can a gem tester recognize artificial (man made, lab created) stones?
• How are Presidium PDT Testers advantageous?
• What's the difference between the Presidium PDT & PDT-S7?

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Gemological Instruments 6

• I need a refractive index/reflectivity chart
• Do the Presidium PRM/PRIM II require liquid or oil to operate?
• How do the Presidium PRM/PRIM II handle doubly refractive stones?
• My refractometer's manual describes a calibration block
• Can a refractometer be used on mounted stones?

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Jewelry Cleaners 2

• Are there any dual ultrasonic/steam cleaners?
• Do ultrasonic cleaners need any specific liquid/solution?

Scales 5

• What is "legal for trade"?
• Do I need a carat scale or a gram scale?
• My 2000g scale's display keeps flashing 2000
• Why does my scale show "The counting feature is not legal for trade"?
• Ohaus PAJ NTEP Certificate of Conformance

Gemstone Gauges 1

• What unique features does the Presidium PGCG have?

Product Manuals 22

• Gold Tester: Tri Electronics GXL-18 Manual
• Tri Electronics G-24 Gold Tester Manual
• Gold Tester: Tri Electronics GT-4000 Manual
• Gold Tester: Tri Electronics GT-3000 Manual
• Gold Tester: RS Mizar ET-18 Manual

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