Cobb Tester – Cobb Sizing Tester Semi-Auto

Benefits

• Sample test area 100 cm2.
• Valid for water and oil.
• Timer with automatic audible alerts for start, pre-notice, and end of test alarms.
• The cylinder vessel can be turned over for better immersion of the sample.
• Manufactured under standard specifications.
• Integrated pressure roller with a mass of 10 +/- 0,5 kg standard specification.
• Glass vessel bottom to view absorption.
• Durable stainless steel construction.
• CE marked.
• Cobb sizing tester calibration service available.

Applications

• Corrugated board.
• Paper.

How to perform a cobb test

1. Weigh the dry sample to the nearest milligram (0.001 g), pour 100 ml of the test liquid water or oil into the vessel on the tester.
2. Place the paper on the tester with the face to be tested facing upwards, turn the vessel 180 degrees and the level and the timer will start automatically.
3. The test liquid will now be in contact with the paper or board being tested.  When the time has elapsed and audible alarm will sound, return the vessel to its start position. remove the wet sample and with its wet face pointing upwards place on to the blotting paper.
4. After the time specified in the relevant standard for your test, place a second blotting paper and using the integrated 10 kg roller eliminate excess liquid, with two rolls, one forwards and one backwards.
5. Finally fold the wet sample and weigh and calculate the cobb for your sample in g/m².

Techlab Systems (TLS) is a leading manufacturer of test equipment. AML Instruments is proud to be the UK exclusive distributor for TLS, meaning we fully support their entire range for sales, service, and calibration.