COBB Absorption Tester – Paper & Board Water Resistance Measurement Device

Hangzhou Pnshar Technology Co.,Ltd

COBB absorption tester measures water resistance of paper and board by quantifying liquid uptake under standardized pressure and time conditions....

Laboratory Instruments Hangzhou Pnshar Technology Co.,Ltd 18 Mar 2026 ( )

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Paper and board-determinator of water absorption is a frequent laboratory testing instrument developed by us according to national standards. It is mainly used to measure the surface water absorption of sized paper and cardboard, including corrugated fiberboard.
But it may be not suitable for paper and cruddy paper with a density lower than 50g/m2. Likewise, it may be not applicable for loose paper (for example, newsprint) or unsized paper (for example, blotting paper) or other paper with high water absorbability.
This instrument is only capable of testing surface water absorption of paper and board. It is not applicable to exactly evaluate the writing performance of paper and board.
APPLICATIONS
Paper. paper board .
STANDARDS
ISO535. GB/T1540
SPECIFICATIONS
1. Test Area：100±0.2cm2
2. Test water：100±5ml
3. Roll Length：200±0.5mm
4. Roll mass：10±0.5kg
FEATURES
1. Quick clamping of the sample
2. test area:100cm 2
3. stainless steel hand roll
4. Soft rubber gasket
5. all in stainless steel

Technical Specifications

Item	Specifications	Remarks
Update Date	Hangzhou Pnshar Technology Co.,Ltd	2026
Lead time	within 30 days	Can be expedited
Material	See product manual	Request Inspection Report
Application	Applicable to multiple industries	Complies with standards
Keywords	Absorption,Tester,Resistance,Measurement,Device

Procurement suggestions

COBB tester: quantifies water absorption in paper/board under 1kg pressure for 60 sec; essential for packaging quality per ISO 535 (for reference only).