CT-01 Cobb Tester is designed to measure the water absorption of paper and paperboard using the Cobb method. It is suitable for sizing paper and Water absorption on cardboard surface, not suitable for basis paper and embossed paper with basis weight less than 50g / m2, low sizing degree or more pinholes; not suitable for accurate evaluation Writing performance of paper or cardboard.
Cobb tester is a test of the water absorption capacity of the paper or cardboard surface. Cobb value: Under certain conditions, within a specified period of time, the mass of water absorbed by the surface of the carton board per unit area is expressed in grams per square meter (g / m2). Specific formulas are as follows:
C = (G2-G1)*100.
Type: C- Cobb absorption value;
The quality of the sample after G2- water absorption;
G1-before the water absorption of the sample quality.
*Total test time recommended by international standards to remove excess water and perform water absorption