Opacity test paper

Hiding power test paper is used to measure the ability of coatings or inks to cover the substrate. The principle involves applying the sample onto black-and-white grid paper and observing the coating thickness or amount required to completely cover the black areas. Its purpose is to evaluate the hiding performance of products, and it is applied in quality control within the coatings and ink industries, helping to determine the coating effectiveness in practical use.
Selection
When selecting opacity test paper, consider the substrate type of the paper and whether the black-and-white grid standard complies with industry norms. Ensure the paper surface is smooth and free of defects to accommodate the application of different samples. Based on the characteristics of the coating or ink being tested, choose test paper of appropriate size and thickness to match the practical application scenario.

Terms

Standards

Instruments

Using blue light diffuse reflection factor R457 measurement technology, Precision ≤ 0.5%, can simultaneously analyze the content of Fluorescent Whitening Agent and determine Opacity, transparency and other Optical inspection paraMeters, support thermal printing output.

$ 1244.00

R457 blue light whiteness formula, Measurement range 0~ 100%, resolution 0.1, Repeatability ≤ 0.3, suitable for fluorescent whitening objects and paper Opacity measurement.

$ 484.00

Using blue light whiteness R457 standard, Measurement range 0~ 100, Repeatability ≤ 0.5, Basis Weight can reflect fluorescent whitening effect and accurate measurement paper Opacity.

$ 646.00

R457 blue light whiteness formula, Measurement range 0~ 199.9%, resolution 0.1, Basis Weight measurement of whiteness of fluorescent whitening objects and paper Opacity, suitable for a variety of materials surface flat samples.

$ 327.00

Pure white paper surface sealed, size 194x286mm, ASTM standard, support hiding power measurement and levelling sag test, matching Applicator Rod can obtain uniform coating results.

$ 304.00

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.

$ 302.00

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.

$ 160.00

Vacuum principle measurement paper breathability performance, Measurement range 0-1000ml/min, test area of 10cm ², suitable for a variety of industrial paper mass detection.

$ 1119.00

Black and white half design, size 98x152mm, with anti-permeability and Color uniformity, smooth surface is not easy to Curl, suitable for accurate hiding power measurement and levelling sag detection.

$ 264.00

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.

$ 88.00

The sampling size of the equipment is 300 * 320mm, and the parallelism of the incision is less than or equal to 0.1mm. It can accurately detect the mechanical properties such as paper tension resistance, elongation and fracture length, and meets the requirements of many national standards.

$ 208.00

Measurement range 10~ 500mN, resolution 5mN, tear arm 104mm, paper size 25 * 15mm, suitable for accurate determination of paper Tear strength.

$ 772.00

Measurement range 0~ 40%, resolution 0.1%, no need to stick the needle to contact the paper surface can quickly display the moisture content, avoid paper damage, suitable for on-site use.

Using sealed surface preparation, excellent waterproof and anti-Curling performance, specification 200x125mm, black and white checkerboard design is convenient for fast measurement of hiding power values within 1 second.

$ 160.00

Using the Cobb test method, the test area is 100cm ² +/- 0.2, and the pressure roller mass is 10kg +/- 0.5, which is suitable for the detection of Water Absorbency on the surface of sizing paper and Cardboard, and is not suitable for loose or unsizing paper.

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