The whiteness tester is used to measure the whiteness of objects, and also to measure the transparency, opacity, light scattering coefficient and absorption coefficient of paper.

1. Determine the diffuse reflection factor of blue light (R457) of the sample, which is called "blue brightness" or "ISO brightness".
2. The paper analyzes whether the sample material contains fluorescent brightener, and can determine the brightness of fluorescence produced by fluorescence emission, that is, whiteness.
3. The intensity stimulus value Y10 of the sample was measured, namely, the diffuse reflection factor ry of green light.
4. The opacity, transparency, light scattering coefficient and light absorption coefficient of the sample were measured.
5. Determine the ink absorption value of paper and board.

1. The appearance of this instrument is novel and compact, and the advanced circuit design effectively guarantees the accuracy and stability of the measurement data.
2. Large-screen high-pixel LCD display module, Chinese display and prompt operation steps, display measurement and statistical results, friendly human-machine interface makes the instrument operation simple and convenient.
3. This instrument is equipped with a standard RS232 interface, which can cooperate with computer software for communication.
4. The instrument is protected from power failure, and the calibration data will not be lost after power failure.
5. Can store 10 reference samples (real samples or data).

1. Zero drift: ≤ 0.1;
2. Indication drift: ≤ 0.1;
3. Indication error: ≤ 0.5;
4. Repeatability error: ≤ 0.1;
5. Mirror reflection error: ≤ 0.1;
6. Sample size: the test plane shall not be less than 30 mm or 19 mm, and the sample thickness shall not exceed 40 mm.
7. Power supply: ~ 220 V ± 10%, 50 Hz, 0.3A;
8. Working environment: temperature 0 ~ 40 ºC, relative humidity no more than 85%;
9. Size and weight: length × width × height = 345 × 260 × 425 (mm), net weight: 11kg.

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Established in 2010, Sun Hong Group is a comprehensive company integrating planning, design, technical support, production, testing and training. We have a professional technical team to provide you with professional design and technical support as well as the best source of goods. After more than ten years of efforts, our products have been exported to 96 countries, and have more than 300 paper plants customers. 

Sun Hong Group have a wide range of business, we can design and produce various customized products according to the different requirements of different customers. Mainly involving Paper Machine Clothing, Industrial Fabric, Paper and pulp machine spare parts, test equipment, etc. In addition, we also provide customers with update and transformation services to enhance customer output.