This standard stipulates that leather physical property testing test pieces should be air-conditioned at the specified temperature, relative humidity and time to achieve equilibrium before testing. This standard applies to all types of leather.
QB/T 3812.2-1999 history
2018QB/T 2707-2018 Leather-Physical and mechanical tests - Sample preparation and conditioning
2005QB/T 2707-2005 Leather-Physical and mechanical tests - Sample preparation and conditioning
1984QB/T 3812.2-1999 Leather.Conditioning of test pieces for physical tests
QB/T 3812.2-1999 Leather.Conditioning of test pieces for physical tests was changed to QB/T 2707-2005 Leather-Physical and mechanical tests - Sample preparation and conditioning.