JINGJI BD-48 Whiteness Instrument

BD-48

Whiteness meter

Applications

This instrument mainly measures the whiteness of various objects such as paper and cardboard, pulp and chemical fiber pulp, cotton and chemical fiber, textiles, plastics, ceramics, porcelain, starch, salt, white cement, china clay, talcum powder and so on. Optical properties such as the opacity of thin-sheet materials can also be measured.

Features

1. Determine the blue light diffuse reflectance factor (R457) of the sample, which is called "blue light whiteness" or "ISO brightness".

2. Analyze whether the sample material contains fluorescent brightener, and measure the fluorescent whiteness produced by fluorescence emission, that is, whiteness.

3. Measure the luminance stimulus value Y10 of the sample, that is, the diffuse reflection factor of green light Ry.

4. Measure the opacity, transparency, light scattering coefficient and light absorption coefficient of the sample.

5. Measure the ink absorption value of paper and cardboard.

Parameters

1. This instrument conforms to GB3978-83 standard illuminator and illumination observation conditions. Simulates D65 illuminator illumination. The geometric conditions of D/O illumination are used to observe, the diameter of the diffuse ball is 150mm, the diameter of the test hole is 30mm, and the light absorber is equipped to eliminate the influence of specular reflection light of the sample. The peak wavelength of the spectral power distribution of the R457 whiteness optical system is 457 nm, the half-height width is 44 nm, and the Y10 optical system conforms to GB3979-83 and the object color measurement method.

2. Measure and digitally display whiteness, fluorescence (whitening) whiteness, opacity (%), etc.

Enforce the standard

GB7933-87: Pulp, paper and cardboard diffuse reflection factor determination method (d/o method);

GB7974-87: Determination of whiteness of paper and cardboard (d/o method);

ISO 2470: Methods for Determining the Diffuse Reflectance Factor of Blue Light on Paper and Cardboard (ISO Whiteness);

GB 8940.2: Pulp whiteness determination method.

GB 1840: Methods for the determination of industrial potato starch.

GB 2913: Test methods for the whiteness of plastics.

GB 13025.2: General test method for salt industry, determination of whiteness.

GB 1543-88: Determination of opacity of paper.

ISO 2471: Opacity determination of paper and cardboard.

GB10339-89: Determination of light scattering coefficient and absorption coefficient of paper and pulp.

GB T/5950: Methods for measuring the whiteness of building materials and non-metallic mineral products.

Textile industry standard: Pulp whiteness determination method for chemical fibers.

Packing list：

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.