Product Overview: The instrument is based on GB / T1540-2002 absorbent paper and cardboard assay (Cobb method) basic parameters and requirements set design. This standard applies to the determination of water absorption of various paper or paperboard surface. But not for an accurate assessment of writing properties of paper or cardboard. Features: Paper and paperboard surface water absorption (Cobb) values: a unit area of ??paper and paperboard at a certain pressure, temperature, within the time prescribed amount of water absorbed by the surface, in g / m dollars. Specific formula is as follows: C = (G2-G1) × 100. Where: C- Cobb water absorption value; after absorbing G2- weigh the quality of the sample; former G1- said absorbent quality of the sample. Absorbent paper and paperboard analyzer is conventional instruments paper and paperboard surface water absorption test, also known as the weight of the paper surface absorption analyzer. This instrument uses a variety of methods of absorption test Cobb (Cobb) test, and therefore also known as Bo absorbent analyzer. Technical parameters: 1. metal cylindrical inner cross-sectional area of ??100 ± 0.2㎝2 (corresponding to an inner diameter of 112.8 ± 0.2mm), cylinder height of 50mm, the contact with the sample surface portion of the cylindrical ring should be smooth. 2. Quantitative absorbent paper for 200 ~ 250g / m, the absorption rate of 75mm / 10min. When a single absorbent paper quantitatively less than 200 ~ 250 g / m, can be used to meet the requirements of multi-layer stack. 3. Smooth metal flat roll: the length of the roll of 200 ± 0.5mm, the quality should be 10 ± 0.5kg. 4. Test water: 100mm ± 5ml. 5. Size and Weight: Dimensions: 480 × 400 × 420 (mm), Weight: 28kg