Presto cobb tester is used for fast determination of the quantity of water absorbed by a paper or board in a given time . The Water absorptiveness (cobb value) of a substance is defined as the mass of water absorbed in a specific time by a 1 sq. metre sample of paper, board or corrugated board, under standardised conditions. A cobb test paper contains a cylindrical cobb test platform hanging on a rod with a diameter of 60 mm. The cylinder has a water level indicator at 10 mm and 25 mm height. Inside you will find a rubber pad with a 145 mm diameter for keeping the testing specimen. The hanging structure is always locked from one end at the rod.
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