Cobb Sizing Tester

Cobb Sizing Tester measures the weight increase of a sample, when exposed to water for a given time.

Product features

The seat type turnover structure is convenient and safe to use.

The main parts are made of stainless steel.

Technical index

Test area: （100±0.2）cm²

Test water consumption: (100 ± 5) ml

Width of metal press roller: (200 ±0.5) mm

Quality of metal press roller: (10 ± 0.5) kg

Test description

With uniform sampling equipment from samples cut from standard samples (125 + 5mm 125 + 5mm of square or circular cylinder), the amount of 100ml water into the cylinder, the annular surface will test face down on the cylinder on the cover and the clamping cylinder is fixed together, then turn the cylinder 180 degrees, open at the same time the stopwatch, the water in the 10s~15s before the end of the cylinder, righting, loosen the cap clip under samples, in an instant of time to reach the required water, water absorbent paper face down on the paved, put on a piece of absorbent paper in the sample above, immediately with metal roller in force under 4S in the mainland stick pressure once the sample remaining on the surface of the water drained, and then weighing. The arithmetic mean of the 5 measuring results of the positive and negative sides is measured respectively.

Note: the cylinder surface and pad should be dry and the hands should not touch the test area. When the cylinder is leaking or the test area is exposed to water, the sample should be discarded.

Applicable standard

GB/T1540

ISO535

QB/T1668

TAPPI T441

Device parameter

Overall size (L * w * h): (458 * 317 * 395) mm

Net weight: 27kg

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Cobb Sizing Tester