Black & White Testing Paper

A black and white test paper is a contrast detection tool consisting of black and white areas. Its principle relies on the human eye's sensitivity to differences in brightness and darkness, allowing the evaluation of coverage by observing how a coating or ink conceals the black and white background. It is used to assess the opacity of materials and is applied in industries such as coatings and printing for quickly checking coating thickness or ink uniformity.
Selection
When selecting black and white test paper, consider paper with a flat, texture-free surface and clear, distinct boundaries between black and white. Choose an appropriate size based on the thickness of the test sample to ensure adequate coverage of the test area. Match industry standards, such as high-density paper for coatings and smooth-surface paper for printing. Check the paper’s solvent resistance to avoid bleeding or deformation during testing. Refer to the actual application environment, such as selecting moisture-resistant types in high-humidity conditions.

Terms

Standards

Instruments

Made of non-fluorescent paper, does not contain Fluorescent Whitening Agent, the black part reflectance is less than 1, the white part reflectance is 80 +/- 2, the surface is smooth and anti-Curl, and the test area is 0.1 square Meters.

$ 91.00

Black part reflectance less than 1, white part reflectance 80 +/- 2, Laminating design enhanced anti-Curl ability, suitable for spreading rate testing, area of 0.1 square Meters.

$ 89.00

Black part reflectance less than 1, white part reflectance 80 +/- 2, no Laminating design to enhance paint wettability, avoid checking or cissing, suitable for specific spreading rate brushing tests.

$ 88.00

Laminating-free black and white half design, size 98 * 152mm, Encasement specification 100 sheets/bag, suitable for Coating inks film hiding power performance detection experiment.

$ 89.00

Made of high-quality non-fluorescent paper, does not contain Fluorescent Whitening Agent, black reflectance < 1, white reflectance 80 +/- 2, Laminating design enhances anti-Curl ability, test area of 0.1 square Meters.

$ 89.00

After overheating, the white display window shows white characters on a black background, and the frame adopts regression directional reflection technology to facilitate low-light long-distance inspection. The size is 25 * 25mm, and the discoloration method is irreversible, which is suitable for indoor and outdoor environments.

$ 90.00

After overheating, the white display window shows white characters on a black background, and the frame adopts regression directional reflection technology to facilitate long-distance inspection of low light. The size is 25 * 25mm, and the discoloration method is irreversible.

$ 90.00

Black and white half design is convenient for hiding ratio calculation, surface sealing treatment improves waterproof performance, 200x125mm specification ensures test standardization, and effectively prevents paper Curl from affecting Measurement accuracy.

$ 162.00

Using non-fluorescent paper substrate, white reflectance 80 +/- 2, black reflectance < 1, Laminating design enhances Curl resistance, 0.1 square Meter standard area is suitable for spreading rate testing.

$ 91.00

Using irreversible discoloration technology, white turns black after overheating, temperature Measurement accuracy 100 ℃, Dimensions 22 * 22mm, each piece is a single temperature point.

$ 101.00

Using 140 * 250mm black and white half design, no Laminating surface to ensure detection accuracy, suitable for hiding power performance testing, Encasement specification of 100 sheets/pack for experimental use.

$ 90.00

Black and white half design is convenient for hiding power comparison, 140 * 250mm standard size is suitable for experimental requirements, surface Laminating enhances durability, and 100 sheets per pack meets batch testing.

$ 90.00

Black and white half design, size 98x152mm, ASTM standard, can accurately measure Coating hiding power, support transparent film and plastic pRoducts hiding ratio detection.

$ 267.00

The black and white half design is easy to observe the covering effect, the size is 194 * 260mm to meet the standard test requirements, and the non-Laminating surface ensures the detection accuracy, which is suitable for laboratory film performance evaluation.

$ 93.00

The black and white contrast design can intuitively evaluate the covering effect, in line with the D4941 standard specification, the size is 140x254mm for easy operation, the matching Applicator Rod can obtain uniform coating, support levelling sag and other tests.

$ 275.00

Articles