COBB Tester (Water Absorption Test)
An equipment to determine the water absorption property of paper, paper board and corrugated fibreboard.
- A new currency note has a very low COBB Value. i.e. Even if you dip it in water, it will absorb very less water.
- A newsprint paper on the other hand has a very high COBB Value. i.e. it will absorb water very quickly.
notes : To be used with a Digital Balance of 0.01g accuracy (not included)
World’s cheapest and best COBB Tester.
Our COBB Tester has a special no-spill design.
Normal COBB Testers have to be used near a washbasin or sink. But our COBB Tester gives you the flexibility to test on an Executive’s Desk without the fear of spilling any water and spoiling the surroundings. Over the years, you will realise the convenience of this feature as it is very annoying to lift and carry the 8 – 10 Kg machine to the wash basin every time you want to test. Moreover you may not even have a washbasin in the QC Lab, hence making the job even more inconvenient and time consuming.
Types of Test
- 60 / 120 Seconds COBB Test for Paper
- 30 Minute COBB Test for Waterproof Paper / Board
Cobb Index : ( 60 / 120 Second Test ) : Is the grams of water absorbed by 1 Sq. Mtr paper surface during flooded contact with 1 cm (0.4 inch) water column for 60 or 120 seconds.
Cobb Index : ( 30 Minute Test ) : Is the grams of water absorbed by 1 Sq. Mtr waterproof paper / board surface during flooded contact with 2.5 cm (1.0 inch) water column for 30 minutes.