Ask a question

Email about product

Available with a choice of 10, 25 & 100 cm2 rings, roller and blotters

Primary used in pulp and paper mills, the Cobb Tester is a simple instrument that measures the water absorptiveness of paper, cardboard and corrugated fibreboard under standard conditions. The cobb sizing test is a manual test used worldwide to test absorption or resistance to absorption of water, oil and other liquids.

The water absorptiveness is a significant parameter in the specification of paper and board for use in the packaging and printing industries.

Different surface areas can be tested: 10, 25 and 100 cm2. The cobb has a precision machined testing cylinder and the flat lower edge is firmly positioned over the test sample, without the risk of leakages or cutting into the test sample.

The conditioning roll has a sliding handle which ensures that only the standard conditioning weight is applied to the test piece. There is a template for the quick and accurate preparation of standard test samples.

Standards: ISO 535, DIN-EN 20535, TAPPI T-441

Dimensions: Cobb 15x15x15 cm;  Roll 18×9.5×22 cm; Template 12.5×12.5×3.5 cm

Test area (standard) diameter 112.8 mm; 100 cm2 Water depth 10 mm
Water volume 100 ml Conditioning roll mass 10.0 ± 0.5 kg
Diameter of conditioning roll 90 ± 10 mm
Model Description
4180AN Gurley-Cobb Sizing tester with 100 cm2 cylinder
4180BN Gurley-Cobb Sizing tester with 100, 25 and 10 cm2 cylinders
4180CN 4180-A kit with Precision Roller and Blotting Paper, 250 sheets
4180DN 4180-B kit with Precision Roller and Blotting Paper, 250 sheets, x3 rings 100, 25 & 10 cm2
RL-COBB-A 100cm2 ring with quick release clamp
RL-COBB-B x3 Cobb cylinders 10, 50 and 100 cm2
RL-COB-A-1 Cobb Roller

Scroll for more Related Product options.

Contact Our Sales Team

01223 492081

Cobb Tester
Cobb Tester
RL-COBB-A Cobb Sizing Tester with Quick Release Clamp Comprised of x1 100 cm2 Ring + x1 Roller.
Cobb Tester
4180BN Gurley Cobb Sizing Tester Comprised of x3 Rings - 100 cm2; 25 cm2; 10 cm2