RH-K100 Cobb Absorption Tester is a special instrument for determination of water absorption of the paper and paperboard, the main technical indexes and performance parameters is according with the relevant provisions of ISO535 Paper and Paperboard - Determination of Water Absorption -- Cobb law and QB/T1668 Cobb Absorption Determination Instrument.

This instrument is mainly used to determinate the surface water absorption of the sized paper and paperboard under the standard conditions. The loose paper(such as newsprint paper), Unsized paper (such as quite high blotting paper) and other absorbent paper is out of the scope of the above instrument and they should be tested by other methods and instruments.