Accuracy and reproducibility assessment of length measuring instrument ver 2. 0 for cashmere and other similar fibers.

In order to make the carding fiber length can be rapidly and accurately measured, a new instrument version 2. 0 for cashmere and other similar fibers was developed. The instrument consists of sampling and sample preparation device, photoelectric detection device and control computer of three parts. 37 kinds of cashmere and others were tested by the new instrument and compared with the experimental data obtained by the center's manual row test method specified in GB 18267 -- 2013" Cashmere". The results show that the data on the average of length from the new instrument is consistent with that of the hand row method. Then the repeated tests of the 17 kinds of sample prove that the instrument with good reproducibility and stability. Furthermore, when compared with the reproducibility of hand row method, the results indicate that the data from this instrument has small random error and high reliability. The new measuring instrument is suitable for cashmere, rabbit hair, camel hair, yak hair and other common carding wool fiber length of the test. [ABSTRACT FROM AUTHOR]