Now the rubbing fastness tester introduced is the Amade Manual crockmeter. It is used to determine the degree of colorfastness to external friction, including wet rubbing and dry rubbing. A rubbing finger of diameter (16 ± 0.1) mm covered by a desized and bleached white cotton cloth is pressed by a downward force of (9 ± 0.2) N, moving back and forth in a straight line along the track of (104 ± 3) mm against the test piece.
It is easy to understand from the name that the power of this tester is by hand, so it doesn’t need electric power during the test. Crank with one hand clockwise drives the motion of rubbing finger by means of an eccentric gear. There is a mechanical counter to record the cycle number throughout the operation. At completion, the colorfastness state of the specimen is observed and compare the staining of the cotton clothe under the suitable illumination with the Gray Scale according to specific test specifications.
Manual crock tester is commonly used for testing paper, yarn, fabric, leather, etc. Welcome to contact us for more details If you are interested in it.
Electric Crockmeter is also available from us, please feel free to check it from our website.