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COBB Absorption Tester: (for example, blotting paper) or other paper with high water absorbability. This instrument is only capable of testing surface water absorption of paper and board. It is not applicable to exactly ...

BEKK Smoothness Tester: test the smoothness off the paper or cardboard (by Bekk method). Bekk smoothness: time in seconds which under a defined pressure differential is required to draw a definite quantity of air at ...

Box Compression Strength Tester: test Strength test which belongs to a destructive test is mainly used to measure the deformation when the sample is loaded with maximum pressure or crushing strength. 2)Constant Value Test There are ...

Brightness Meter: testing hole is 25mm. 3. Light absorber is provided to eliminate the effect of specular reflection. Peak wavelength of spectral power distribution of R457 whiteness optical system is 457nm and its ...

Brightness and Color Tester: test: δ(Y10)<0.1,δ(X10,Y10)<0.001。 2. Accuracy: △Y10<1.0,△x10(Y10)<0.01。 3. Sample size: Diameter of the testing plane should be larger than 30mm while the thickness larger than 40mm. 4. ...

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COBB Absorption Tester