Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Flat Brushes |
| Origin | - |
| Brand | Sheelon |
| Product Type | Dyne Test Pen |
| Available Levels | 32, 34, 36 mN/m |
| Application Method | Direct Surface Wipe |
| Primary Use | Surface Tension Testing |
| Target Materials | Plastic, Film, Foil |
| Packaging | Individual Sealed Tube |
| Shelf Life | 12 Months Unopened |
| Storage Condition | Cool and Dry Place |
| Country of Origin | China |
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for QC department
Simple, effective, and affordable. We keep a stock of 32, 34, and 36 dyne pens on the production floor. Helps us catch surface treatment issues before they become defects.
Anonymous
Mar 26, 2026
Rating: 4/5
Good value for money
Works as expected for quick quality control checks. The ink dries relatively fast, so you need to observe the bead-up immediately. Would recommend buying a set of different levels.
Anonymous
Mar 24, 2026
Rating: 3/5
Decent but cap can be tight
The testing fluid works fine, but sometimes the cap is very hard to remove, which slows down the workflow. Otherwise, the measurement seems accurate compared to our lab equipment.
Anonymous
Mar 23, 2026
Rating: 5/5
Reliable testing tool
Been using Sheelon pens for years. They are accurate and the tips hold up well even with frequent use. Great for ensuring adhesion before applying labels or inks.
Anonymous
Mar 10, 2026
Rating: 5/5
Essential for our printing line
We use these pens daily to check the corona treatment on our packaging films. The 34 dyne level is perfect for our current setup. Results are consistent and easy to read.
Anonymous
Mar 05, 2026
Rating: 4/5
Standard industry tool
Does exactly what a dyne pen should do. The liquid spreads clearly on treated surfaces and beads up on untreated ones. Shipping was fast and packaging was secure.
Q: Can this pen be used on metal surfaces?
A: These pens are primarily designed for non-porous polymer surfaces like plastic films and foils. While they can technically be applied to metal, the results may not correlate standardly with plastic surface tension metrics.
Q: What is the difference between the 32, 34, and 36 levels?
A: The number represents the surface tension in mN/m (milli-Newtons per meter). You select the level that matches your required adhesion threshold. If the liquid beads up, the surface tension is lower than the pen value; if it wets the surface, it is higher.
Q: Is the ink toxic or hazardous?
A: The fluid contains formamide and other solvents. It should be used in a well-ventilated area. Please refer to the Safety Data Sheet (SDS) included with the product for detailed handling and disposal instructions.
Q: Do you offer bulk discounts for purchasing a full set?
A: Yes, we offer tiered pricing for bulk orders. Please contact our sales team directly through the 'Contact Seller' button on our store page to discuss volume pricing for multiple units or mixed level sets.
Q: How long does the test liquid last once the pen is opened?
A: Once opened, the pen should typically last for several months if the cap is tightly sealed after every use to prevent evaporation. For best accuracy, replace if the fluid volume drops significantly or results become inconsistent.
Outdoor Waterproof Backpack Camouflage Dry Bag with Wet/Dry Separation for Swimming, Rafting, and Trekking
$8.42
![[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors](https://www.gosteppe.com/cache/small/product/270170/legacy-main-59be8c850af1ec303ad4901b.webp)
[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors
$39.90
Sketching Tool Set for Art Students - Includes Blending Stumps, Tortillons, Paper Stumps, Sponge Balls, Cotton Swabs, Highlight Pens, Gray Tone Tools, Insert Knives, Smudging Knives, Scrapers, and Blending Cotton
$7.65
Suede Rope Korean Velvet Rope DIY Aromatherapy Candle Plaster Tag Hanging Cord Packaging Gift Box Ribbon Decorative Leather Rope
$0.85
![[Damai Holds Microneedle Hair Transplant Patent] Hair Collagen | Improves Hair Loss, Nourishes Dermis and Follicles](https://www.gosteppe.com/cache/small/product/270167/legacy-main-9c6481bdd960acdf68495a0e.webp)
[Damai Holds Microneedle Hair Transplant Patent] Hair Collagen | Improves Hair Loss, Nourishes Dermis and Follicles
$1,980.00
Selected Factory Low-Temperature 3D Printing Pen for Kids, Children's 3D Printing Pen Set, 3D Drawing Pen
$100.02
Milk Pasteurization Line - Small-Scale Yogurt Production Machine for Liquid Yogurt and Pasteurized Milk
$8,148.00
Commercial Small Heating Warmer Cabinet, Glass Constant-Temperature Countertop Display Case for Egg Tarts, Burgers, and Fried Chicken
$884.00
Custom Seal Stamp Engraving Personal Name Phone Number Private Chop
$5.89
Commercial Food Warmer Cabinet for Milk, Soy Milk, Burgers, Egg Tarts, Fried Chicken, Pies, Youtiao, and Bread Display
$1,355.00
PJ0040 Rose Embossed Cross Silicone Mold - For Candles, Aromatherapy, Soap, Plaster, and DIY Crafts
$11.20
Yuwell Oxygen Concentrator Control Board Motherboard 8F-3AW/8F-5AW/9F-5BW
$120.00
Leyingfang Floating Pen for Kids and Students - Water-Based Non-Toxic Erasable Whiteboard Pen for Drawing in Water, Large Capacity Suspension Pen
$18.00
Car Wheel Lug Nut Covers - Colorful Silicone Dust-Proof and Rust-Proof Caps for Tire Bolt Protection and Exterior Styling
$8.80
Automatic Stainless Steel Vegetable Slicer for Ginger, Potatoes, Carrots, Onions, and Cabbage - Commercial Dicing Machine
$3,951.36
![[Damai Holds Micro-Needle Hair Transplant Patent] Top Thinning Hair Transplant | Micro-Needle Density Enhancement (500 Units)](https://www.gosteppe.com/cache/small/product/270156/legacy-main-525bdaff56f89ee94752ef9c.webp)
[Damai Holds Micro-Needle Hair Transplant Patent] Top Thinning Hair Transplant | Micro-Needle Density Enhancement (500 Units)
$7,000.00
Little Leather Paper Strip Music Box (30-Note) Sheet Music - Contact Before Ordering; Specify Song Email for Digital Score Delivery
$1.00
Kitchen Sink Strainer Basket Push-Type Food Residue Separator Filter Hanging Storage Rack
$3.80
Heavy-Duty Heat-Treated CV Joint Puller Tool - Axle Ball Cage Removal and Installation Device for Automotive Repair
$66.00
Mobile Integrated Waste Transfer Station - 17 Cubic Meters Movable Compression Container
$159,443.00
Antique Glaze White Ceramic Brush Washer Large Brush Washer Water Pot Ink Stone Washing Calligraphy Painting Brush Washing Basin Four Treasures of the Study
$16.80
Authentic Chinese Philosophy Classics: Di Tian Sui, Qiong Tong Bao Jian, San Ming Tong Hui - Annotated & Illustrated Edition
$29.90
Household Disposable Kitchen Sink Garbage Filter Mesh Drain Pool Dishwashing Basin Strainer Vegetable Bowl Leftover Sink
$3.51
Continental Run-Flat Tires: 225/235/245/255/265 45/50/55 R17/R18/R19/R20/R21/R22
$357.00
Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag
$11.70
Integrated Catalytic Combustion Unit RCO Furnace - Exhaust Gas Treatment System with Activated Carbon Adsorption-Desorption and Catalytic Combustion
$231,249.00
Universal Waterproof and Sunproof Cover for E-Bike Charger with Outdoor Storage Box
$11.85
Baohong Paper Brick Watercolor Paper Pad, Medium/Coarse Texture, Square/Round Shapes for Painting, Sketching, and Cotton Pulp Practice
$28.00
Commercial Food Warmer Cabinet for Pies, Youtiao, Burgers, Egg Tarts, and Fried Chicken, Heating and Temperature-Controlled Display Case
$977.00
Masking Tape Spray Paint Shielding Paper for Art Students and Sketching - Non-bleeding, Residue-free, Hand-tearable, Shoe-safe
$1.00
![[Customizable] Blank DIY Bookmarks - Thickened Hard Cardstock in Multiple Sizes with Tassels for Kindergarten and Elementary Art, Calligraphy, and Reading Gifts](https://www.gosteppe.com/cache/medium/product/386159/legacy-main-05a2e5e73e5ac60017fbef5e.webp)
