Water absorptiveness - Cobb testing
What is absorption?
![Absorption](https://www.rycobel.com/assets/uploads/site/images/_767xAUTO_fit_center-center_80_none/absorption.jpg)
Absorption is the ability of paper or paperboard to take up and retain fluids.
It’s important to know how much fluid a material can absorb. For example, it’s important to know the absorption capacity of toilet paper. Usually it is assumed, the more layers the better.
With an absorption tester the different types of toilet paper can be tested to see if one absorbs more than the other. An universale tensile (UTM) tester can measure the strength of the material.
![D 04 17 ATS 600](https://www.rycobel.com/assets/uploads/site/products/essai-dabsorption/_767xAUTO_fit_center-center_80_none/D-04-17-ATS-600.jpg)
Absorption tester
Property: absorption & cobb
![Cobb tester for water absorption](https://www.rycobel.com/assets/uploads/site/products/test-cobb/_767xAUTO_fit_center-center_80_none/Cobb.png)
Cobb tester - Water absorption tester
Application: paper & pulp, cardboard
Property: absorption & cobb
![Lister ac](https://www.rycobel.com/assets/uploads/site/products/lister-absorptietester/_767xAUTO_fit_center-center_80_none/lister_ac.jpg)
Lister Absorption tester
Application: textile, non-wovens & fibres
Property: absorption & cobb
![Pgx Dosing Unit Pg1010 01Mr](https://www.rycobel.com/assets/uploads/site/products/pg-dosing-unit-for-pgx/_767xAUTO_fit_center-center_80_none/pgx-dosing-unit-pg1010-01mr_2021-04-08-071944.png)
PG Dosing unit for PGX+
Property: absorption & cobb, contact angle - wetting angle
![Pgx](https://www.rycobel.com/assets/uploads/site/products/pocket-goniometer-x/_767xAUTO_fit_center-center_80_none/pgx_180111_133449.png)
PGX+ contact angle analyser - Pocket Goniometer
Application: paper & pulp, cardboard
Property: absorption & cobb, contact angle - wetting angle
![0 d 9 e 0d9e53b713dcf1bc1539784dd6c0162cc82399ca RL SAC A](https://www.rycobel.com/assets/uploads/site/products/saugfaehigkeitstester-nach-cobb-halbautomatisch/_767xAUTO_fit_center-center_80_none/0_d_9_e_0d9e53b713dcf1bc1539784dd6c0162cc82399ca_RL_SAC_A.png)
Semiautomatic cobb water and oil absorption tester
Property: absorption & cobb