Laboratory testing instrument manufacturer106-C Raja Dinendra Street, Kolkata – 700004, India

Testing instrument manufacturer+91 98310 09675 , +91 84201 44822

Cobb Tester


Cobb Tester is extremely useful for measuring water absorption of paper perpendicularly to the surface of the sheet of paper and board in a given time. Well known sizing test by COBB Test has been accepted by I.S.I.BPBMA and TAPPI Standard . The water absorption of a substance is defined as the mass of water absorbed in a specific time by a 1 sq. meter sample of paper, board or corrugated board, under standardized condition.

The Cobb tester consists a flat metal plate and rubber mat for placing the paper sample. Metal Cylinder with open ends with arrangement of placing over the rubber mat and clamped firmly to make watertight.

Cobb Tester