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.
Buy Now View Catalog| Measurement range | |
| Slider weight | |
| Slider size | |
| Testing accuracy | |
| Dimension of working plate | |
| Speed of slider | |
| Slider stroke | |
| Specimen size | |
| Division value | |
| Number of specimen holders | |
| 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 |
| Sealed testing speed | |
| Volume of distilled water | |
| Sample diameter | 125 mm |
| Sample error | |
| Sample Thickness | |
| Draining time | |
| Residual water volume | |
| Hydraulic pressure | |
| 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.
Measurement range : 0.01 to 10 N
Slider weight : 200 g
Slider size : 63×63 mm
Capacity : 10 -16000 mN
Resolution : 0.1 mN
Tearing arm : 104 ± 1 mm
Sample (size) length : Diameter ≥30 mm, Thickness ≤ 40 mm
System : D/0 lighting geometrical viewing conditions, diffuser diameter (d) 150mm, testing hole diameter 30mm
Light source : D65 as illuminating source
Measuring scope : ( 1 to 9999) s, divided in to (1 to 15) s, (15 to 300) s, (300 to 9999) s, the automatic (no. more than 200 s)
Accuracy : ±0.1 s within 300 s
Vacuum system volume (ml) : Bigger volume: 380 ± 1
Smaller volume: 38 ± 1
Sample (size) length : Diameter ≥30 mm, Thickness ≤ 40 mm
Measurement mode : Diffuse reflection factor Rx, Ry, Rz, stimulus value Y10, X10, Z10, chromaticity coordinates x10, y10, z10; lightness L *, chroma a * b *, chroma C * ab, hue angle h * ab, dominant wavelength λd, excitement purity Pe, color difference ΔE * ab, lightness difference ΔL *, chroma difference ΔC * ab, hue difference ΔH * ab, Hunter system L , A, b
Stability : ≤ 0.1 within 30 min
Measuring range : 0 to 1000 mN
Resolution : 0.1 mN
Indication error : ± 1 %
Measurement range : 0 to 100° SR
Sealed testing speed : 100 ± 10 mm/s
Volume of distilled water : 1000 ± 5 ml
| 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 |
| 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 |
| Test angle | 60° |
| Gloss aperture | 2 × 3 mm |
| Measurement range | 0 to 1000 GU |
| The maximum temperature | 300°C |
| Temperature fluctuation | Within ± 0.5°C |
| Temperature uniformity | Within ± 1°C |
| Vacuum degree | 0 to 90 KPa |
| Accuracy | 1 % FS |
| Resolution | 0.1 KPa |
| Preliminary test force | 98 N |
| Total test force | 588, 980, 1471 N |
| Total test force dwell time | 0 to 30 S |
| Preliminary test force | 98 N |
| Total test force | 588, 980, 1471 N |
| Total test force dwell time | 1 to 30 S |
| Measuring range | 0.001 to 9999 |
| Stability | A (absorbency of light) <0.003 within 3 mins |
| Linearity error | <3.0 % |
| Measuring range | 0.001 to 9999 |
| Stability | A (absorbency of light) <0.003 within 3 mins |
| Linearity error | <3.0 % |
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