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Contact SupplierCobb tester is for the measurement of 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.
cobb tester technical data
metal roller sectional area: 100±0.2cm2
metal roller diameter: 112.8±0.2mm
roll height:50mm
blotting paper: 200~250g㎡
absorption speed: 75mm10min
smooth metal roller: length 200±0.5mm,mass10±0.5kg。
water volume: 100mm±5ml。
dimension: 480×400×420(mm)
weight: 28kg
cobb tester standard
iso 535,gbt 1540,qbt 1668