The TQC-Sheen Pencil Hardness Tester is a simple and effective test apparatus designed to evaluate the scratch resistance (hardness) of paints, varnishes, and coatings according to the Wolff-Wilborn method.
In this test, graphite pencils graded from 6B to 8H are used. The pencil is fixed at a 45° angle and applied to the coated surface with a constant pressure to produce a scratch. Following a series of tests, visual inspection is performed to determine which pencil grade causes visible damage to the surface.
The device is supplied as a complete set, including 20 Koh-i-noor pencils and a special sharpener.
| Product Code | Description |
|---|---|
| VF2377 |
TQC Pencil Hardness Tester (750g + 1000g Models)
Applicable Standards: ISO 15184, ASTM D3363, JIS K-5400, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL-C-27227, EN 13523-4 |
| VF2378 | TQC Wolff-Wilborn Pencil Hardness Tester (750g) Applicable Standards: ISO 15184, ASTM D3363, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL-C-27227, EN 13523-4 Supplied with a calibration certificate |
| VF2379 |
TQC Pencil Hardness Tester (500g)
Although there is no specific international standard associated with this device, the film and LCD industries have adopted a modified version of the JIS K-5600 (ISO 15184) standard, adapting the test weight to 500 grams in accordance with their internal specifications. |