Audited Supplier
To determine the water absorptiveness of sized paper and board, including corrugated fiberboard, under standard conditions.
It may not suitable for paper of grammage less than 50g/m2 or embossed paper. It is not suitable for porous papers such as newsprint or unsized papers such as blotting paper or other papers having a relatively high water absorptivenss for which ISO 8787 is more suitable.
This instrument is only capable of testing surface water absorption of paper and board. It is not applicable to exactly evaluate the writing performance of paper and board.
| ISO535 (Paper and board-Determination of water absorption-Cobb method) GB/T1668 (Paper and board-Determination of water absorption-Cobb method) GB/T1540 (Paper and board-Determination of water absorption-Cobb method) TAPPI T441 Water absorptiveness of sized(non-bibulous) paper, paperbaord, and corrugated fiberboard(Cobb test) |
Test Principle
A test piece is weighed immediately before and immediately after exposure for a specified time of one surface to water, followed by blotting. The result of the increase in mass is expressed in grams per square meter(g/m2)
COBB Definition
The value of paper and cardboard surface water absorbing capacity (Cobb): the unit area of paper and cardboard in a certain pressure and temperature, within the time specified the absorption of water by surface to g / m*m meter.
The specific formula is as follows:
C = (G2 - G1) x 100.
C - value of Cobb water absorption;
G2 - the sample quality after absorbing water;
G1 - the sample quality before absorbing water
Products Presentation
| Model | Y025 |
| Measurement length | 250±1mm |
| Shrinkage measurement accuracy | 0.1% |
| Shrinkage force measuring range | 0~25N |
| Shrinkage force measurement accuracy | 0.1N |
| Heating range | Room temperature~250ºC |
| Temperature Control Precision | ±0.1ºC |
| Timing range | 0~999S |
| Power supply | AC220V 50Hz |
| Overall Dimension | LxWxH:520mmx375mmx510mm |
| Weight | 35kg |
Q: How is your service?
- English operation manual and operation video will guide you how to use it.
- On-site machine training & installation can be provided with certain charges.
Q: What's your warranty period?
Q: What's the payment term?
A: Usually TT, L/C are available. For others, please contact with us for negotiation.
Q: What's your lead time?
Q: Are you able to provide a ISO 17025 calibration certificate?
A: Yes, we generally provide two calibration certificates(optional).
• ISO 17025 certificate provided by a third party inspection company with charges.
• Calibration certificate provided by UTS without charges.
Q: Can you send report of fumigation report?
A: Our packing is composite board, not log, so it do not need fumigation treatment.
Thank You For Always Supporting UTS Products!
