Water absorption tester- Cobb Tester TP-C21 is used for the determination of the water absorption of sized paper, paperboard, and corrugated paper under standard conditions within 200 to 250 g/m2 range by Cobb method. It is adopted with overturn structure for ease of operations.
Get Catalog| Metal Cylinder inner area | (100 ± 0.2) cm2 |
| Metal Cylinder height | 50 mm |
| Metal roller width | (200 ± 0..5) mm |
| Metal roller weight | (10 ± 0.5) kg |
| Absorbency paper | 200 to 250 g/m2 |
| Absorbency speed | 75 mm/10 min |
| Sample diameter | 125 mm |
| Dimension | 270×400×300 mm |
| Net Weight | 35 kg |
Cobb tester (water absorption tester) is used to test water absorption of sized paper, paperboard, corrugated paper in paper & printing industry, packaging industry.
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| Sample (size) length | Diameter ≥30 mm, Thickness ≤ 40 mm |
| Sample width | |
| Measuring range |
| Sample (size) length | Diameter ≥30 mm, Thickness ≤ 40 mm |
| Sample width | |
| Measuring range |
| Sample (size) length | 38×70 mm |
| Sample width | |
| Measuring range | (1-500) mN.m (divided into 7 small ranges) |
| The maximum temperature | 300°C |
| Temperature fluctuation | Within ± 0.5°C |
| Temperature uniformity | Within ± 1°C |
| Temperature control range | Room temperature to -70 ℃ (room temperature ≤ 25 ℃） |
| Temperature accuracy | ± 0.3 ℃ |
| Impact speed | 0℃ to -30℃ around 2.5 ℃/min -30℃ to -40℃ around 2.5 ℃/min -40℃ to -70℃ around 2.0 ℃/min |
| Mixed capacity | 0.5 to 1 kg, 2 to 3 kg, 5 to 7 kg |
| Temperature range | RT to 300°C |
| Temperature control system | PID control |
| Test arm weight | 2.5 N |
| Additional Loads | 2.5 ± 0.1 N, 5 ± 0.1 N, 10 ± 0.1 N, |
| Idler | 150 mm |
| Preliminary test force | 98 N |
| Total test force | 588, 980, 1471 N |
| Brinell hardness test |
| Preliminary test force | 98 N |
| Total test force | 588, 980, 1471 N |
| Brinell hardness test |
| Preliminary test force | 98 N |
| Total test force | 588, 980, 1471 N |
| Brinell hardness test | 306, 613, 1839 N |
| Measuring range | 0.001 to 9999 |
| Stability | A (absorbency of light) |
| Linearity error |
| Measuring range | 0.001 to 9999 |
| Stability | A (absorbency of light) |
| Linearity error |
| Salinity Measurement range | 0.00 to 19.99 ms/cm |
| Measuring accuracy | EC ± 2% full scale |
| Temperature Measurement range | -5 to 50°C |
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