Coating film hiding power test card paper

The hiding power test card is a paperboard with alternating black and white squares, used to observe the disappearance of these squares after applying a paint film. By comparing with standard hiding power levels, the ability of the paint to cover the underlying surface is assessed. It is employed in the production and application of coatings to control hiding performance, ensuring that the underlying color is not visible after application.
Selection
When selecting test cards, ensure the boundaries between black and white areas are clear and distinct, and the paper is flat without curling. The base color of the card should meet the standard black-and-white contrast, with surface ink absorption that is moderate and non-penetrating. The specifications and dimensions should match commonly used testing instruments, and the material should be stable, resistant to discoloration, and aging.

Terms

Standards

Instruments

Using 25 × 25mm ² 32 grid design, Glass plate thickness 1.2~ 2mm, through the standard Checkerboard test can accurately calculate the Coating hiding power, easy and fast operation.

$ 128.00

Used for paint film hiding power measurement and reflectance measurement, indication interval 0-100, Repeatability 0.3%, in line with national standards GB/T13452.3, GB9270, GB5211.

$ 490.00

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

Measurement range 0~ 100, repeability accuracy 0.3%, Permissible Ambient Temperature 20 ° +/- 5 ° C, suitable for film hiding power testing.

$ 369.00

Using film lamination technology, with excellent solvent and chemical resistance, paper Film thickness 0.29mm, surface Laminating to ensure Spreader uniformity, with annotation section for easy recording of test data.

$ 306.00

Adopt 0 ° illumination diffuse reflection reception principle, Repeatability ≤ 0.3, Indication Error +/- 1.0, suitable for white and shallow Paints hiding power measurement, easy and portable operation.

$ 501.00

Using film lamination technology, with excellent chemical resistance and uniform Spreader effect, paper Film thickness 0.29mm and surface Laminating, with a dedicated annotation area for easy recording of test data.

$ 318.00

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

With 45/0 reflectance and hiding power test function, repeability 0.2%, repRoducibility 0.5%, automatic calibration and correction of black and white board values, support USB data transmission and statistical mode.

$ 646.00

Hard stainless steel material acid and alkali erosion, can be prepared 100/150/200/250μm four thickness wet-film, the operation of the conversion angle can switch the thickness, application width 80mm.

$ 186.00

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

Adopt 0 ° illumination diffuse reflection reception principle, indication interval 0-100, Repeatability 0.3%, support contrast ratio automatic calculation, equipped with standard plate and working ceramic plate to ensure Measurement accuracy.

$ 299.00

Glass material can be used for repeatability, Checkerboard size 25x25mm, shape 250x100mm, in line with the national standard GB/T1726, durable and accurate test.

$ 143.00

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

White part reflectance 80 +/- 2, non-Laminating design to enhance paint wettability, test area of 0.1 square Meters, Curl and checking resistance, suitable for brushing applications.

$ 88.00

Articles

Spectrophotometer measures ink spectral reflectance and opacity.
This article introduces how to measure the hiding power of ink using a spectrophotometer. The instrument irradiates the ink sample, measures its reflectance within the visible light spectrum, and calculates the hiding power using the Kubelka-Munk model.
The combination of hiding power chart paper and a spectrophotometer enables the digital evaluation of hiding power.
This article introduces how to combine hiding power cards with spectrophotometers to achieve digital assessment of hiding power.
Technical Details of Measuring Paint Contrast Ratio Using Black-and-White Checkerboard Method with Hiding Power Card
This article introduces a method for measuring the hiding power of coatings using black and white checkerboard paper.
Reflectometer for measuring the hiding power of colored paint coatings
This article introduces the method of using a reflectometer to measure the hiding power of colored paint coatings. Hiding power refers to the ability of a coating to conceal differences in the underlying color. Traditional methods relying on visual judgment are prone to subjective influences, while instrumental measurement offers greater objectivity and accuracy.
Opacity tester evaluates the covering power of coatings.
The hiding power tester is a professional instrument used to evaluate the covering ability of coatings. It quantifies the hiding effect by measuring the reflectance ratio (contrast ratio) of the coating film on black and white substrates.
Black-and-white checkerboard and reflectometer for measuring pigment hiding power
This article introduces two methods for measuring the hiding power of pigments: the black-and-white checkerboard method and the reflectometer method.
Covering Power Evaluation—Mass per Unit Area Method vs. Reflectance Comparison Method
This article primarily discusses two common methods for evaluating hiding power in industries such as coatings and inks: the mass per unit area method and the reflectance contrast method.
The role of black-and-white test paper in contrast ratio measurement
Black-and-white test paper plays a key role in determining the contrast ratio of coating materials. The contrast ratio is an important indicator of hiding power, calculated by comparing the reflectance of the coating on black and white substrates.
Hiding power measurement: Equivalence of mass per unit area method and reflectance contrast method.
Covering power is a key indicator for evaluating the optical performance of coating materials such as paints, inks, and pigments, reflecting the material's ability to conceal the color of the substrate. Accurate determination of covering power is crucial in industrial quality control and research and development.