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The TQC Pencil Hardness Test according Wolff Wilborn provides in a simple method to test the scratch hardness of coatings.

STANDARD: ISO 15184, ASTM D3363, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227, JIS K-5400

Product Description
The TQC Pencil Hardness Test according Wolff Wilborn provides in a simple method to test the scratch hardness of coatings.
In this test, pencils in a range of 6B to 8H hardness-grade are used.
The pencil is moved scratching over the surface under a 45° angle with a constant pressure.
Then an optical assessment is carried out to see which pencil hardness damages the surface.
Delivered with a set of 20 Koh-i-noor pencils and a pencil sharpener.

Specification
VF2377 TQC Pencil Hardness Test (750g + 1000g)
Complies with: ISO 15184, ASTM D3363, JIS K-5400, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227
VF2378 TQC Pencil Hardness Test according Wolff Wilborn (750g)
Complies with: ISO 15184, ASTM D3363, JIS K-5600, ECCA-T4-1, BS 3900-E19, SNV 37113, SIS 184187, NEN 5350, MIL C 27 227 Calibration Certificate: included
VF2379 TQC Pencil Hardness Test according Wolff Wilborn (500g)
There is no standard applicable however the film industry and the LCD industry have their own standard (regulation) to inspect with the load of 500g based on the text of JIS-K5600（ISO 15184）
Pencils vary from 8B to 10H. (8B, 7B, 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H, 10H).