This standard specifies the test requirements and operating methods for the determination of the impurity content of yellow and carnation (red) hemp fibers by rough picking by shaking and fine picking by hand. This standard is applicable to the determination of the impurity content of yellow and kenaf (red) hemp fibers.
1990GB/T 12411.6-1990 Test method for percentage of trash content in jute and kenaf fibres
GB/T 12411.6-1990 Test method for percentage of trash content in jute and kenaf fibres was changed to GB/T 12411-2006 Test methods for jute and kenaf fibres.
GB/T 12411.6-1990 Test method for percentage of trash content in jute and kenaf fibres was changed to GB/T 20477-2006 Methods of quarantine and identification of Solenopsis invicta Buren .