Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Flat Brushes |
| Origin | - |
| Brand | Cuiyuan CY |
| Model Number | No. 38 |
| Surface Tension Level | 38 dyne/cm |
| Ink Color | Red |
| Application Type | Surface Tension Testing |
| Compatible Surfaces | Plastic, Film, Metal, Glass |
| Pen Tip Material | Felt |
| Country of Origin | China |
| Package Contents | 1 Dyne Pen |
| Shelf Life | 12 Months (Unopened) |
Anonymous
Mar 30, 2026
Rating: 5/5
Reliable domestic brand
I have switched from imported brands to this Cuiyuan CY pen, and the results are identical. It accurately identifies if the surface energy meets the 38 dyne requirement for our adhesive applications.
Anonymous
Mar 20, 2026
Rating: 4/5
Solid performance
Does exactly what a dyne pen should do. We tested it against our calibrated equipment and it was accurate. Just remember to keep the cap tight when not in use to prevent drying.
Anonymous
Mar 19, 2026
Rating: 5/5
Great for printing prep
We use this to ensure our substrates are ready for flexographic printing. The No. 38 level is critical for our ink adhesion, and this pen never fails us. Will buy again.
Anonymous
Mar 18, 2026
Rating: 5/5
Perfect for our quality control line
We use these pens daily to test the corona treatment on our packaging films. The No. 38 rating is consistent, and the red ink provides excellent contrast against clear plastics. Highly recommended for industrial use.
Anonymous
Mar 10, 2026
Rating: 4/5
Good value for money
Works as expected for surface tension testing. The ink flow is smooth. I deducted one star only because the cap feels slightly loose, but it hasn't affected the performance yet.
Anonymous
Mar 09, 2026
Rating: 5/5
Clear and precise
The red color makes it very easy to see where the ink beads up or spreads out. Essential tool for our lab technicians. Delivery was fast too.
Q: Do you offer bulk discounts for orders over 50 units?
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 request a quote for large quantities.
Q: How long does the ink last once the bottle is opened?
A: Once opened, the pen typically remains effective for about 3 to 6 months if the cap is sealed tightly immediately after each use. Exposure to air can cause the solvent to evaporate, altering the dyne level.
Q: Is the ink toxic?
A: The ink contains solvents typical for dyne tests. It should be used in a well-ventilated area. Please refer to the Safety Data Sheet (SDS) included with the product for specific handling instructions.
Q: What happens if the ink beads up instead of spreading?
A: If the ink beads up within 2 seconds, it indicates that the surface tension of the material is lower than 38 dyne/cm. You would need to increase the corona treatment or clean the surface further.
Q: Can this pen be used on metal surfaces?
A: Yes, the No. 38 Dyne Pen can be used on metal surfaces to test for cleanliness and oxidation levels before painting or bonding, although it is most commonly used on polymers and films.
Custom Company Sign KT Board Bank Account Opening Plaque Stainless Steel Door Plate PVC Simple Signboard Acrylic Advertising Board
$17.00
New Travel Portable Water Bottle Sleeve, Crossbody Bag for Coins, Keys, and Phone, Single Bottle Pouch for Cycling and Fitness
$20.00
Useless Genius Autumn Forest Animal Plant Bird Butterfly Handmade Pottery Ceramic Stamp Clay Mold
$8.80
Underbite Corrector Storage Case for Children - Portable Box with Lanyard for Frankel Appliance and TB Expander
$14.33
Wilderness Old Blacksmith EDC Storage Box - Small Shockproof, Waterproof, and Moisture-Proof Case with Foam Insert
$29.90
Manufacturer Sales Fully Automatic Pasteurization Production Line Vegetable Blanching Equipment Bottled Milk Sterilization Line
$12,740.00
Pomegranate Juice Grape Juice Pasteurization Tank Orange Juice Apple Juice Sterilizer Complete Mare's Milk Pasteurized Milk Production Line
$6,048.00
Ouyang Style Medium Regular Script: 52 Ancient Poems on Xuan Paper Large Character Copybook for Beginners - Ink-Blot Resistant
$12.00
Honeywell 7950 Phase Change Pad Thailand Import Laptop CPU GPU Thermal Interface Material Heat Sink Paste
$14.80
Calligraphy Arm Rest Felt Pad - Mini Brocade Felt Hand Rest for Chinese Painting and Calligraphy Practice, Inkstone Mat by Meilin Brush Studio
$7.48
Trail Running Silicone Hydration Bladder - Foldable 500ML Pocket Water Bag for Hiking and Outdoor Sports
$22.00
Steel Wheel Lug Nuts for Car Modification, Compatible with Civic, Mazda6, Reiz, Sylphy, Extended External Hex Nut Caps
$75.55
Mobile Gantry Crane – Manual Push-Run Small Home Hoist (1/2/3/5 Ton)
$1,244.00
Taiwan Ginger Shredder - Multi-Function Stainless Steel Slicer for Potatoes, Carrots, and Ginger
$5,200.00
Iers Electric Airbrush/Marker Pen Wireless Handheld Portable for Gundam Model Painting
$322.00
Commercial Glass Food Warmer Display Case for Egg Tarts, Hamburgers, Fried Chicken, and Youtiao - Countertop Heating Cabinet for Catering
$1,795.00
Premium Used Tires Removed from Vehicles Sizes 155 165 175 185 195 205 215 225
$54.00
Storage Bag Compatible with Dyson/Laifen Hair Dryer Curling Iron Straightener Double-Layer Portable Travel Hand-Carry Case
$48.40
Chushinmi - Silicone Collapsible Dish Drying Rack, Kitchen Organizer, Sink Utensil Holder for Bowls and Chopsticks
$61.90
Wenxin Tang Ultra-Clear Zhi Yong Thousand Character Classic Regular Script Calligraphy Cards - Boxed Practice Sheets for Medium-Sized Brush Writing
$40.80
Cute Pig Pot Lid Holder and Drainage Mat, Multi-Function Heat Insulator and Cutting Board Rest
$2.01
![[Damai Micro-Needle Hair Transplant Patent] Top Scalp Thinning Treatment | High-Density 200 Grafts Micro-Needle Transplant](https://www.gosteppe.com/cache/small/product/269847/legacy-main-921c5365abd34b2597668ec5.webp)
[Damai Micro-Needle Hair Transplant Patent] Top Scalp Thinning Treatment | High-Density 200 Grafts Micro-Needle Transplant
$199.00
Song Dynasty Guo Xi's 'Traveling in Snowy Mountains' Hanging Scroll - Study Copy Template, Art Core, Landscape Painting, Zen Decorative Art, HD Collectible
$12.80
Swan-Style Drain Basket for Wet/Dry Separation in Kitchen Sinks; Hanging Vegetable Washer and Strainer Rack
$111,978.00
Custom Mesh Lid Organizer Bag for Pelican 1535 Case - Laptop Compartment
$118.70
Home LED High-Power Rechargeable Flashlight, Multi-Purpose Long-Range Portable Ultra-Bright Mini Torch
$20.60
Accsoon CineEye M7 Pro 4K Wireless Video Transmitter and Monitor with 7-inch HDMI/SDI Dual-Transmission Screen
$99.00
Stainless Steel Sink Rack Kitchen Organizer Over-Sink Dish Drying Rack with Utensil Holder
$48.00
Specialized Vegetable Growing Box - Foam Balcony Planter, Rectangular Plastic Pot for Home Gardening
$41.70
Thickened Resin Vegetable Planter Box - Rectangular Plastic Balcony Pot for Growing Vegetables and Flowers
$101.00
![[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)
