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Cobb Tester  CTA

Cobb Test is the calculated mass of water absorbed in a specified time by 1 m of paper or board under specified conditions. The test area is 100 cm for Paper.


The test is used for determining liquid absorptiveness or resilience of treated and untreated papers, boards, fabrics and other sheet materials. The test consists of a test apparatus, its 10-kg roller and blotting paper. The roller method is recommended to insure better consistency and reliability that can be obtained by manual blotting or rubbing the specimen.

Standard Compliance:

CT/A meets TAPPI T-441, ASTM D2045,
AS/NZ 1301. 411, ISO 535, CPPA F2,
DIN 53132, SCAN P12
Related Standards : TAPPI T458, SCAN P18