

What is the Drimark Tri-Test Pen used for?
Used to detect counterfeit currency. It combines three counterfeit detection methods in one device: a UV light for security features, a white light for watermark inspection, and a counterfeit detector pen that chemically tests the paper.
What do I look for using the UV light on the Tri-Test?
The UV light reveals the embedded security thread in U.S. bills ($5 and up). Each denomination glows a different color and appears in a specific location on the bill. For example, a $20 bill will show a green glow in a specific vertical strip.
Can I use the Tri-Test on non-U.S. currency?
It is primarily designed for U.S. currency and its specific security features. While the UV light might reveal some features on foreign currency, the pen and watermark light are unlikely to be effective outside the U.S.
How accurate is the Tri-Test?
The Tri-Test is highly reliable for quick screening but not foolproof. It's a first line of defense that detects most common counterfeits.
How do I use the white light feature on the Tri-Test?
The white LED light helps you inspect watermarks and microprinting on U.S. currency. Hold the bill up to the light to check for the watermark image (usually a replica of the portrait) and verify the presence and clarity of tiny printed details.
Compare DriMark Products
UV, MG, WM scanner | Detailed Use | Quick Test Pen |
Paper, UV, Watermark | Detection Methods | Paper Test |
No | Made In the USA | Yes |
Audible/visual alert | Feature | Long-lasting ink |
Portal | Feature | Nontoxic & portable |
UV, MG, WM scanner | Detailed Use | UV & Pen |
Paper, UV, Watermark | Detection Methods | UV, Paper |
No | Made In the USA | Yes |
Audible/visual alert | Feature | Double detection |
Portal | Feature | Quick Test Pen |
UV, MG, WM scanner | Detailed Use | Antimicrobial barrel |
Paper, UV, Watermark | Detection Methods | Paper Test |
No | Made In the USA | Yes |
Audible/visual alert | Feature | Kills 99% of germs |
Portal | Feature | Ideal for shared use |
UV, MG, WM scanner | Detailed Use | Instant flash check |
Paper, UV, Watermark | Detection Methods | Ink, UV, Watermark |
No | Made In the USA | No |
Audible/visual alert | Feature | Pocketsize with clip |
Portal | Feature | Ideal for retail |
What is the Drimark Tri-Test Pen used for?
Used to detect counterfeit currency. It combines three counterfeit detection methods in one device: a UV light for security features, a white light for watermark inspection, and a counterfeit detector pen that chemically tests the paper.
What do I look for using the UV light on the Tri-Test?
The UV light reveals the embedded security thread in U.S. bills ($5 and up). Each denomination glows a different color and appears in a specific location on the bill. For example, a $20 bill will show a green glow in a specific vertical strip.
Can I use the Tri-Test on non-U.S. currency?
It is primarily designed for U.S. currency and its specific security features. While the UV light might reveal some features on foreign currency, the pen and watermark light are unlikely to be effective outside the U.S.
How accurate is the Tri-Test?
The Tri-Test is highly reliable for quick screening but not foolproof. It's a first line of defense that detects most common counterfeits.
How do I use the white light feature on the Tri-Test?
The white LED light helps you inspect watermarks and microprinting on U.S. currency. Hold the bill up to the light to check for the watermark image (usually a replica of the portrait) and verify the presence and clarity of tiny printed details.
Smaller pen, 3 times the ink
2 TESTS IN 1- PROTECT YOUR PROFITS
2 TESTS IN 1- PROTECT YOUR PROFITS
FRAUD DETECTION
Dri Mark's "Pocket Size" Counterfeit Bill Detector Pen has 3 times the ink and is almost an inch shorter than previous models.
Security strip test: powerful UV light is embedded in the cap and is easy to activate; The LED bulb reveals the hidden security stripe found in all 5 dollar bills and higher.
Security strip test: powerful UV light is embedded in the cap and is easy to activate; The LED bulb reveals the hidden security stripe found in all 5 dollar bills and higher.
UV Light is great for authenticating passports, credit cards, traveler’s checks, driver's licenses & other official documents.
Compare DriMark Products
Counterfeit Pen
The Dri Mark pen detects fake bills by reacting to starch in wood-based paper, marking dark if fake.
UV Detection
Pen marks dark on fake bills; UV light in cap checks security threads to confirm authenticity.
Detection Machine
The Dri Mark Flash Test detects fake bills using ink, watermark, and UV light tests.

























































