Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / Flat Brushes
Origin	-
Brand	arcotest
Origin	Germany
Product Type	Dyne Test Pen
Available Models	18, 20, 22, 24-72 mN/m
Application	Surface Tension Testing
Target Materials	Plastics, Films, Foils, Metals
Test Method	Wetting Tension (Dyne)
Packaging	Individual Plastic Case
Shelf Life	Approx. 12 Months (Unopened)
Industry Standard	ISO 8296 / ASTM D2578

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Essential for our QC lab

We use these pens daily to test the treat level of our polyethylene films before printing. The German arcotest pens are incredibly consistent and reliable compared to other brands we have tried. Highly recommended for quality control.

Anonymous

Mar 30, 2026

Rating: 5/5

Accurate and easy to use

Very straightforward to use. You simply draw a line and observe if it beads up or stays wet for two seconds. It has saved us from several batch rejections by catching low surface tension issues early.

Anonymous

Mar 23, 2026

Rating: 5/5

Industry standard for a reason

Our clients specifically request test results using arcotest pens. These are the gold standard in the industry for verifying corona treatment levels. The build quality is excellent and the markings are clear.

Anonymous

Mar 17, 2026

Rating: 4/5

Works well for R&D

Purchased a set ranging from 24 to 60 for our research department. They provide consistent results when testing new polymer formulations. Would be nice if they came in a multi-pack discount, but the individual quality is top-notch.

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable for metal cleaning verification

We use these not just for plastics but also to verify the cleanliness of metal surfaces before bonding. The 50 dyne pen gives us a clear pass/fail indication instantly. Great value for money.

Anonymous

Mar 02, 2026

Rating: 4/5

Good product, fast shipping

The pen works exactly as described. I bought the 38 and 42 dyne models for our packaging line. The only reason for 4 stars is that the ink seems to evaporate quickly if the cap is left off even for a minute, but that is standard for this type of tool.

5 FAQ

Q: Do you offer bulk discounts for purchasing a full range of models?

A: Yes, we offer volume pricing for orders containing multiple units or full sets covering the range from 18 to 72 mN/m. Please contact our sales team directly or add a large quantity to your cart to see the automated discount applied at checkout.

Q: Can these pens be used on curved surfaces?

A: Yes, arcotest pens can be used on curved surfaces such as bottles or tubes. However, ensure you apply enough pressure to get a continuous line without scratching the substrate. For very small radii, exercise caution to avoid breaking the felt tip.

Q: How do I know which dyne level pen to purchase for my specific plastic film?

A: You should select a pen with a dyne level slightly higher than your target specification. If the liquid remains wet for 2 seconds, the surface tension is equal to or greater than the pen's value. If it beads up immediately, the surface tension is lower. We recommend buying a set of 3-4 values around your target to pinpoint the exact level.

Q: Are these pens compliant with international testing standards?

A: Yes, the arcotest Dyne Pens are designed to meet major international standards including ISO 8296 and ASTM D2578 for the determination of wetting tension of polyolefin films and sheets.

Q: What is the shelf life of these pens once opened?

A: While unopened pens typically last about 12 months from the manufacture date, opened pens have a shorter effective life depending on usage and storage. Always ensure the cap is clicked shut tightly immediately after use to prevent solvent evaporation, which can alter the dyne value. If the ink dries out or results become inconsistent, replace the p...

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