How does the Dri Mark Counterfeit Detector Pen work?

The iodine-based ink reacts with starch in fake bills, turning dark. On real U.S. currency (starch-free), the mark stays light.

Can it detect foreign bills?

Standard pens are for U.S. bills only. Dri Mark’s Universal Pen can check some foreign currencies but not polymer bills.

Is it effective on old and new bills?

Yes, it works on all U.S. bills since they all use the same cotton-linen paper without starch.

Can counterfeiters fool the pen?

Advanced fakes using real paper (like bleached bills) may pass. Use UV lights or other tools for better security.

How long does the pen last?

It lasts long due to a larger ink supply. Keep the cap on tightly and store it cool and dry to maximize life.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Dri Mark 351B1 偽造紙幣検出器マーカーペン、米国製、3倍のインク、ポケットサイズ、偽のマネーチェッカー-米国通貨の損失防止テスター&詐欺防止(1パック)

Product ID: 740119644

💼Pocket-sized for on-the-go security

🖊️3x ink intensity for clear detection

🇺🇸Works on all US bills since 1959

COP 101723

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Description

🖋️ Spot fakes before they cost you—security in your pocket!

SIMPLE ONE MARK TEST - Just one quick mark per bill for fast, hassle-free verification
ULTRA PORTABLE DESIGN - Compact, lightweight pen fits perfectly in your pocket or cash drawer
INSTANT AUTHENTICITY CHECK - Chemical-sensitive ink reveals counterfeit bills in seconds
TRUSTED BY BUSINESSES FOR 25 YEARS - Proven reliability for loss prevention in retail and small business
UNIVERSAL US CURRENCY COMPATIBILITY - Accurately tests all new US currency designs from 1959 onward

The Dri Mark 351B1 counterfeit detection pen uses chemically reactive ink to instantly verify US currency authenticity. Trusted by businesses for over 25 years, this pocket-sized tool marks bills with a color change that signals genuine or suspicious notes, supporting all US bills issued since 1959. Its 3x ink intensity ensures clear, reliable results for fast, on-the-spot fraud prevention.

Specifications

ASIN	B00006IE9P
Amazon 売れ筋ランキング	文房具・オフィス用品 - 866,353位 ( 文房具・オフィス用品の売れ筋ランキングを見る ) 金銭管理・会計用品 - 5,930位
Amazon.co.jp での取り扱い開始日	2012/8/4
おすすめ度	4.7 5つ星のうち4.7 (3,840) var
サイズ	1 Pack
ブランド	Drimark
付属品	ボールペン
商品の数量	1
材質	非対応。
用途タイプ	キャッシュレジスター&キャッシュハンドリング用品, 偽造通貨探知機
色	ブラック
製品サイズ	19.05 x 8 x 1.65 cm; 4.54 g
製品型番	351B-1

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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COP 101723

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews