This standard specifies the test method for determining the impurity content of raw cotton with a raw cotton impurity analyzer. This standard applies to the determination of the impurity content of raw cotton.
GB/T 6499-1992 history
2022GB/T 6499-2022 Test method for percentage of trash content in raw cotton
2012GB/T 6499-2012 Test method for percentage of trash content in raw cotton
2007GB/T 6499-2007 Test method for percentage of trash content in raw cotton
1992GB/T 6499-1992 Test method for percentage of trash content in raw cotton