Cobb Sizing Tester

Cobb sizing 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. meter. The Gurley-Cobb sizing test can be used to test absorption or resistance to absorption of water, oil and other liquids. This procedure determines the quantity of water absorbed by a sample of paper or other sheet material in a specified time and under standardized conditions.The specimen is again weighed and the Cobb Sizing is calculated with the help of the following formula. Cobb Sizing = Weight of the specimen after test procedure and weight of the specimen before test procedure. The instrument is very easy and simple to operate and does not require any electrical power to operate.