Paper water absorptiveness tester COBB tester with blotting paper 10Kg roller COBB testing

Place of Origin	China
Brand Name	Cell Instruments
Certification	CE
Model Number	COBB-
Minimum Order Quantity	1 SET
Price	Get An Offer
Packaging Details	Plywood Carton
Delivery Time	3~5 days
Payment Terms	TT, LC
Supply Ability	At Stock

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Product Details

Power	Electronic	Usage	Paper Testing Instrument

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Product Description

Paper water absorptiveness tester measures the surface water absorption of paper and paper board. Loose paper, e.g. newsprint, unsized paper, e.g. blotter and other high absorbability paper is not for this tester.

Paper water absorptiveness tester principle

The Cobb value of surface water absorption of paper and paperboard.:

The calculated mass of water absorbed in a specified time by a unit area of paper or board under specified pressure and temperature conditions. It is expressed in g/㎡.

C=(G2-G1)×100.

C-water absorptiveness

G2-wet mass, in grams, of the test piece

G1-dry mass, in grams, of the test piece

When Cobb value is less than 200～250 g/㎡ for single layer, more layers can used.

Paper water absorptiveness tester COBB tester with blotting paper 10Kg roller COBB testing 0

Paper water absorptiveness tester technical data

Metal roller sectional area	100±0.2㎝2
Metal roller diameter	112.8±0.2mm
Roll height	50mm
Blotting paper	200～250g/㎡
Absorption speed	75mm/10min
Smooth metal roller	length 200±0.5mm,mass10±0.5kg.
Water volume	100mm±5ml.
Dimension	480×400×420(mm)

Paper water absorptiveness tester COBB tester with blotting paper 10Kg roller COBB testing 1

Standard

ISO 535,GB/T 1540,QB/T 1668

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