Top 5 Pens to Stop Check Washing: Buyer’s Guide

Did you know that thieves can easily change the amount on your paper checks? It’s a scary thought! Scammers use simple tricks to wash away the ink and write in their own numbers. This sneaky crime, called check washing, can cost you a lot of money and cause major stress. You want to protect your hard-earned cash, but figuring out which pen actually stops these criminals feels like a guessing game. Many pens claim to work, but which ones really deliver the security you need?

Choosing the wrong pen leaves your bank account wide open to fraud. You need a reliable defense! This post cuts through the confusion. We will show you exactly what features make a pen theft-proof. By the end of this article, you will know the best pens available to secure your checks completely. Get ready to lock down your finances and say goodbye to check washing worries!

Top Pen To Prevent Check Washing Recommendations

No. 1
uni-ball® 207™ Retractable Fraud Prevention Gel Pens, Bold Point, 1.0 mm, Translucent Black...
  • Bold point 1.0 mm retractable gel pens render distinct letters, numbers and graphics with an outstanding finish
  • Pigment-based gel offers vibrant ink color, ensuring that every mark is brilliantly communicated
  • uni Super Ink technology forms a strong bond with the paper, preventing document fraud and check washing
  • A textured grip allows comfortable writing while ensuring greater control and precision throughout your tasks and projects
No. 2
uniball 207 Retractable Gel Pens, Micro Point (0.5mm), Black, 12 Pack
  • Gel pens feature smooth-flowing pigment-based ink with vibrant color
  • The fine 0.5mm micro point produces outstanding readability and detail
  • Water and fade-resistant gel ink helps you compose long-lasting, high-quality documents you can archive
  • uni Super Ink entraps the gel ink in the paper, creating a strong bond that resists document fraud
No. 3
5Forms 102184 Security Pens QTY 3
  • Medium Point (.7mm)
  • Black Ink Only
  • Security Pen uses special gel ink that binds to the fibers of checks or other important documents
  • Ink is fade-resistant and water-resistant
No. 4
uniball 207 Retractable Gel Pens, Medium Point (0.7mm), Black, 2 Pack
  • Gel pens feature smooth-flowing pigment-based ink with vibrant color
  • The medium 0.7 mm point balances between detail and boldness, suitable for any writing or creative need
  • Water and fade-resistant gel ink helps you compose long-lasting, high-quality documents you can archive
  • uni Super Ink entraps the gel ink in the paper, creating a strong bond that resists document fraud
No. 5
uni-ball® 207™ Retractable Fraud Prevention Gel Pens, Medium Point, 0.7 mm, Black Barrels,...
  • Medium point 0.7 mm retractable gel pens blend detail with bold lines in a delicate balance
  • Pigment-based gel offers vibrant ink color, ensuring that every mark is brilliantly communicated
  • uni Super Ink technology forms a strong bond with the paper, preventing document fraud and check washing
  • A textured grip allows comfortable writing while ensuring greater control and precision throughout your tasks and projects
SaleNo. 6
uni-ball 207 Retractable Gel Pens Medium Point, 0.7mm, Black, 12 Pack
  • Nothing Else Like It - Uni's proprietary ink formulation is archival quality, our long-lasting inks are high quality and immune to fading, fraud, and water; The obvious choice for professionals, amateurs, and everyone in between.
  • Simply The Best - Each Uniball pen is meticulously and thoughtfully designed, manufactured, and assembled in Japan; our high-quality finishes along with our stylish designs make us the standard when it comes to the ideal writing experience.
  • Multiple Tip Sizes - Choose from 0.38 pens ultra micro tip, 0.5 pens micro tip, 0.7 pens medium tip, and 1.0 pens bold tip; Best pens for coloring, drawing, studying, business, and precision writing.
  • Multiple Color Options - Choose from black ink pens, blue ink, red ink, purple ink, and multi-color pens; whether you need blue and black pens or colorful pens, we've got you covered!
No. 7
Uniball 207+ Black Retractable Gel Pens 2 Pack with Medium 0.7mm Points, Fraud Proof Office Pens for...
  • Nothing Else Like It - Uni's proprietary ink formulation is archival quality, our long-lasting inks are high quality and immune to fading, fraud, and water; The obvious choice for professionals, amateurs, and everyone in between.
  • Simply The Best - Each Uniball pen is meticulously and thoughtfully designed, manufactured, and assembled in Japan; our high-quality finishes along with our stylish designs make us the standard when it comes to the ideal writing experience.
  • Multiple Tip Sizes - Choose from 0.38 pens ultra micro tip, 0.5 pens micro tip, 0.7 pens medium tip, and 1.0 pens bold tip; Best pens for coloring, drawing, studying, business, and precision writing.
  • Multiple Color Options - Choose from black ink pens, blue ink, red ink, purple ink, and multi-color pens; whether you need blue and black pens or colorful pens, we've got you covered!
No. 8
uni-ball 207 Retractable Gel Pens, Medium Point (0.7mm), Black, 4 Count
  • Gel Pen: Preferred by professionals for their stylish metallic accents and high-quality finish, our black gel pens come filled with smooth-flowing pigment-based ink that won't fade
  • uni Super Ink: Water- and fade-resistant gel ink helps you compose long-lasting, high-quality documents you can archive; Our ink pens offer protection against water, fading, and fraud
  • Quality Construction: Equipped with a textured rubber grip, our writing pens help you maintain a comfortable, controlled grasp; Convenient clip ensures that your favorite ink pen is always at hand
  • Sleek Look: Each black pen in our gel pen set features sleek metallic barrel accents; Our black pens come equipped with 0.7mm tips that draw vivid lines

Your Guide to Stopping Check Washers: Choosing the Best Security Pen

Check washing is a serious problem. Thieves change the details on your checks after you sign them. A good security pen makes your signature hard to change. This guide helps you pick the best pen to protect your money.

Key Features to Look For

When buying a pen to prevent check washing, look for special ink. This ink is the most important part. It fights against chemicals used by thieves.

1. Chemical Resistance
  • Solvent Proof Ink: The best pens use ink that resists common solvents. Solvents are liquids thieves use to erase your signature. Look for terms like “smudge-proof” or “tamper-evident.”
  • Permanent Marking: The ink must soak deeply into the paper fibers immediately. This prevents easy scraping or washing off.
2. Ink Type and Color
  • Pigment-Based Ink: This is better than dye-based ink. Pigment ink contains tiny solid particles. These particles lock into the paper.
  • Dark, Solid Color: Black or dark blue ink shows up clearly and is harder to cover up or change than lighter colors.
3. Pen Build and Usability
  • Comfortable Grip: You sign checks often. A pen that feels good in your hand helps you write clearly every time.
  • Smooth Writing Tip: A quality rollerball or felt tip provides a smooth line. This makes your signature look natural and hard to forge by copying.

Important Materials in Security Pens

The materials define how well the pen works against criminals. Focus on the ink formula.

The Ink Formula

The best security inks often contain carbon black or specialized polymers. These ingredients react poorly to acetone or bleach, the common tools of check washers. When a solvent touches the ink, the ink either bleeds heavily or turns into an unreadable blob. This alerts you that someone tried to tamper with the check.

The Pen Body

While the body doesn’t stop the washing, durability matters. Metal or sturdy plastic casings last longer in your drawer or purse. Some pens have caps that click securely, preventing leaks.

Factors That Improve or Reduce Quality

Not all security pens are created equal. Quality varies widely based on testing and ink formulation.

What Improves Quality?
  • Independent Testing: Brands that state their pens resist specific chemicals (like bleach or alcohol) usually offer higher quality.
  • Fast Drying Time: Ink that dries in seconds reduces smudging right after signing, keeping your signature sharp.
What Reduces Quality?
  • Dye-Based Ink: If a pen just says “waterproof” but doesn’t mention chemical resistance, the ink might be basic dye. Thieves easily dissolve dye ink.
  • Flimsy Tips: A cheap rollerball tip can skip or scratch the paper, making your signature look weak and easier for a fraudster to copy.

User Experience and Use Cases

These pens are simple tools, but they offer great peace of mind. You use them just like a regular pen.

Everyday Signing

Use your security pen for every check you write, whether it’s for rent, bills, or personal purchases. Make it a habit. Keep it next to your checkbook.

Business Use

Businesses that write many checks benefit most. Using a dedicated security pen for all outgoing payments significantly lowers the risk of large-scale fraud.

The Feeling of Security

The main user benefit is confidence. You sign your documents knowing that if someone tries to alter the amount or payee, the ink will immediately signal the attempt.


10 Frequently Asked Questions (FAQ) About Check Security Pens

Q: What exactly is check washing?

A: Check washing is when a criminal uses chemicals like bleach to erase the payee name or the dollar amount on a signed check. Then, the thief writes in new, larger amounts or their own name.

Q: How does a security pen stop this process?

A: The special ink sinks into the paper fibers. When a thief applies a solvent (like bleach), the security ink reacts by bleeding, smearing, or permanently changing color, making the alteration obvious.

Q: Are all black pens security pens?

A: No. Most standard black ballpoint pens use dye ink, which washes away easily. Only pens specifically formulated with chemical-resistant pigment ink are true security pens.

Q: Should I use these pens for signing credit card slips too?

A: While they offer good protection, credit card slips use different paper. It is best practice to use the security pen for checks, as that is where the greatest financial risk lies.

Q: How long does the ink last in the pen?

A: Most quality security pens last as long as standard pens, usually several months to a year, depending on how often you write checks.

Q: Can a thief still change my signature if I use a security pen?

A: They might be able to slightly alter the shape of the signature, but they cannot easily change the written amount or payee name without destroying the ink’s appearance.

Q: Is pigment ink the same as gel ink?

A: No. While some gel pens use pigment ink, many do not. You must check the product description specifically for claims about chemical resistance or solvent-proof ink.

Q: Where is the best place to store my security pen?

A: Keep it right next to your checkbook. Make signing a check and immediately putting the pen away part of your routine.

Q: Are these pens more expensive than regular pens?

A: They are usually slightly more expensive, but the small extra cost is worth the security they provide against financial loss.

Q: What should I do if my check ink smears after signing?

A: If you notice smearing or bleeding immediately after signing, do not use that check. Destroy it safely and issue a new one. The ink failed to set properly.