Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Flat Brushes
Origin	-
Brand	USA ACCU
Product Type	Dyne Test Pens
Available Dyne Levels	30, 32, 34, 36, 38-72 mN/m
Application	Surface Tension Testing
Industry Use	Printing, Coating, and Bonding
Pen Tip Material	Felt Fiber
Solution Volume	15 ml per pen
Shelf Life	12 Months (Unopened)
Storage Temperature	5°C to 25°C
Country of Origin	USA

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Fast shipping and great product

Ordered the 30, 32, and 34 dyne pens specifically for low-energy surfaces. They arrived well-packaged and worked straight out of the box.

Anonymous

Mar 23, 2026

Rating: 4/5

Standard industry tool

Does exactly what it is supposed to do. The only minor issue is that the caps can be a bit tight sometimes, but that ensures the solution doesn't evaporate.

Anonymous

Mar 20, 2026

Rating: 5/5

Perfect for printing prep

Ensures our substrates are ready for ink adhesion. The felt tips are durable and do not fray easily even with frequent use.

Anonymous

Mar 09, 2026

Rating: 5/5

Reliable and consistent

I have used various brands over the years, but USA ACCU pens provide the most consistent results for our corona treatment verification process.

Anonymous

Mar 04, 2026

Rating: 4/5

Good value for bulk purchase

We bought the full set from 38 to 72. Most work perfectly, though one pen in the 60 range seemed slightly dry upon arrival. Customer service replaced it immediately.

Anonymous

Mar 03, 2026

Rating: 5/5

Essential for our quality control lab

These pens are incredibly accurate for testing surface energy on our plastic films. The color contrast is clear, making it easy to determine the dyne level quickly.

5 FAQ

Q: How should I store these pens to maximize their shelf life?

A: Please store the pens horizontally in a cool, dry place away from direct sunlight and heat sources. Ensure the caps are tightly sealed after every use to prevent evaporation.

Q: Can these pens be used on metal surfaces?

A: Yes, these dyne test pens are suitable for testing surface tension on various materials including plastics, metals, glass, and coated papers.

Q: Are replacement tips available for these pens?

A: No, the felt tips are integrated into the pen design. Once the tip is worn out or the solution is depleted, the entire pen unit should be replaced to ensure accuracy.

Q: What does it mean if the liquid beads up within 2 seconds?

A: If the test liquid beads up or retracts within 2 seconds, the surface energy of the material is lower than the dyne level of the pen used. You should try a pen with a lower dyne value.

Q: Is there a certificate of analysis included with the shipment?

A: Yes, each batch of dyne test pens comes with a Certificate of Analysis (CoA) verifying the surface tension values. You can find it inside the packaging or request a digital copy from us.

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