The main purpose 
The method used to determine the color fastness to perspiration of all leathers in each processing stage. Especially suitable for clothing leather, glove leather and lining leather, but also suitable for unlined shoe upper leather.
Technical index
1. Heavy hammer: 4.5kg
2. Sample size: 100mm×36mm
3. The sample pressure: 1.23N/cm2 (125g/cm2)
Applicable standards (for different standards, different accessories are required)
GB/T 2464.23-1999 Determination of color fastness to perspiration of leather"
ISO 11641:1993 Leather-Color fastness test-Color fastness to perspiration