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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.

Significance:

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