This standard stipulates the extraction method and quantity of test samples for yellow and kenaf (red) hemp fibers. This standard is applicable to the sampling for the determination of the physical properties of yellow and cedar (red) hemp fibers.
GB/T 12411.1-1990 Sampling method of the jute and kenaf fibres was changed to GB/T 12411-2006 Test methods for jute and kenaf fibres.
GB/T 12411.1-1990 Sampling method of the jute and kenaf fibres was changed to GB/T 20477-2006 Methods of quarantine and identification of Solenopsis invicta Buren .