Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Flat Brushes |
| Origin | - |
| Brand | Schuman |
| Product Type | Dyne Test Pen |
| Available Dyne Levels | 28, 30, 32, 34, 36, 38, 40, 42, 44, 72 mN/m |
| Application Method | Brush Tip Application |
| Primary Use | Surface Energy Testing |
| Target Materials | Plastics, Films, Foils, and Coatings |
| Packaging | Individual Sealed Bottle |
| Origin | Authorized UK Distributor |
| Shelf Life | 12 Months from Manufacture |
| Safety Warning | Flammable Liquid, Keep Away from Heat |
Anonymous
Mar 31, 2026
Rating: 5/5
Accurate and durable
Been using Schuman pens for years. This batch from the UK distributor is genuine and performs perfectly. Critical for ensuring our adhesive bonds correctly to polyethylene surfaces.
Anonymous
Mar 23, 2026
Rating: 4/5
Good quality, fast shipping
Ordered the 38 and 40 dyne pens for our production line. They arrived quickly and work as expected. Only giving 4 stars because the cap can be a bit tight to remove with gloves on.
Anonymous
Mar 22, 2026
Rating: 5/5
Essential for our QC lab
We use these pens daily to test surface tension on packaging films before printing. The brush tip applies a consistent line, and the results are reliable every time. Great value for an authorized product.
Anonymous
Mar 07, 2026
Rating: 5/5
Reliable standard for our team
Our entire quality control team relies on these specific dyne levels. The 36 to 44 range covers most of our plastic substrate needs. No issues with drying out prematurely.
Anonymous
Mar 06, 2026
Rating: 3/5
Works well but pricey
The pens function correctly and give clear results, but they are slightly more expensive than other brands. However, knowing it is an authorized distributor gives peace of mind regarding authenticity.
Anonymous
Mar 01, 2026
Rating: 5/5
Perfect for corona treatment checks
Exactly what we needed to verify our corona treater settings. The fluid spreads evenly when the surface energy is sufficient and beads up when it is not. Highly recommended.
Q: Can I return the pens if I ordered the wrong dyne levels?
A: Due to safety regulations regarding flammable liquids, we cannot accept returns on opened dyne pens. If the package is unopened and in original condition, please contact our customer service within 14 days to arrange an exchange.
Q: What is the difference between the 38 and 40 dyne pens?
A: The number indicates the surface energy level in millinewtons per meter (mN/m). You select the pen that matches the required surface tension for your specific printing or bonding process. If the liquid beads up, the surface energy is lower than the pen's rating.
Q: Does this product come with a calibration certificate?
A: As an authorized distributor, our Schuman pens are manufactured to strict standards. While individual pens do not typically come with a unique calibration certificate, the batch meets ISO-compliant manufacturing specifications for dyne test fluids.
Q: How should these pens be stored to maintain shelf life?
A: Store the pens upright in a cool, dry place away from direct sunlight and heat sources. Ensure the cap is tightly sealed immediately after use to prevent the test fluid from evaporating or absorbing moisture.
Q: Are these pens suitable for testing metal surfaces?
A: While primarily designed for plastics, films, and foils, they can technically be used on coated metals. However, bare metals usually have very high surface energy, so lower dyne level pens may always spread, making them less useful for differentiation on untreated metal.
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