LFY-268 Wallpaper Water Absorption Testing Instrument

A specialized paper testing instrument for measuring the absorbency of paper. The instrument adopts the Cobb test method and is therefore also known as the Cobb Absorbency Tester. This instrument is mainly used to measure the water absorption capacity of coated paper (such as wallpaper) and paperboard surfaces under standard conditions. Those relatively loose papers (such as newsprint), uncoated papers (such as ink-absorbing paper), and other papers with high water absorption properties are not suitable for this instrument. 
Scope of Application

The Cobb Absorption Tester is a specialized testing instrument used to measure the water absorption performance of paper and paperboard surfaces. It is also known as the Paper Surface Absorption Weight Tester and is mainly used for testing the water absorption capacity of paper products such as paper, paperboard, grayboard, and specialty paper. 
Technical Specifications

1. Test area: 100 cm² ± 0.2 cm² 
2. Test water volume: 100ml ± 5ml 
3. Press roller length: 200mm ± 0.5mm 
4. Press roller quality: 10kg ± 0.5kg 
5. Working environment: Temperature (20 ± 10) °C, Humidity < 85% 
Applicable Standards 
QB/T 1668 Absorbency Tester for Cotton Fabrics 
GB/T 1540 Method for Determining Water Absorption of Paper and Paperboard (Kobayashi Method) 
ISO 535 - Paper and board - Determination of water absorption - Cobb method