LS-510 Whiteness/Brightness Tester

LS-510 Whiteness/Brightness Tester

Product overview

White/Brightness tester is to determine the whiteness, yellowness, color and color difference of the object, but also can determine the opacity of paper, transparency, light scattering coefficient, light absorption coefficient and ink absorption value.Widely used in papermaking, printing, ceramics, chemical industry, textile printing and dyeing, building materials, grain, salt and other industries.

LS-510 Whiteness/Brightness Tester

Equipment function:

1. Measure the reflected color and color difference of the object, which can be displayed or printed: diffuse reflection factors Rx, Ry, Rz, stimulus values Y10, X10, Z10, chromaticity coordinates X10, Y10, Z10;Lightness L *, a * chromaticity, b *, chroma C * ab, hue Angle h * ab, dominant wavelength lambda d, excited purity, Pe Δ E * ab color, brightness difference Δ L *, chroma difference Δ ab, poor tonal Δ h C * * ab, hunter system L, a and b.
2. The ISO brightness (blue light whiteness R457) and Z whiteness (Rz) can be measured to measure the fluorescence whiteness generated by emission of fluorescent substances in the fluorescence whitening samples.
3. CIE whiteness (Gantz whiteness W10 and color TW10) was measured.
4. Measure the whiteness of ceramics.
5. Measure the whiteness of building materials and non-metallic minerals.
6. Measure hunter whiteness WH.
7. Measure yellow YI.
8. OP of opacity of test sample
9. Measure the transparency T of the sample
10. The light scattering coefficient S of the sample was measured
11. Measure the light absorption coefficient A of the sample.
12. Measure ink absorption value.

LS-510 Whiteness/Brightness Tester

Test standards

ISO 2469 Paper, Board and Pulp — Determination of Diffuse reflectance Factors

ISO 2470 Paper and Board — Determination of Whiteness (Diffuse/vertical method)

ISO 2471 Paper and Board — Determination of Opacity (paper backing) — Diffuse reflectance Method

ISO 9416 “Determination of Light Scattering and Light Absorption Coefficients of Paper” (Kubelka-Munk)

ISO 11475 “Determination of CIE Whiteness for Paper and Cardboard, D65/10 (outdoor Daylight)”

GB/T 7973 Determination of Diffuse Reflection Factors of Paper, Board and Pulp (Diffuse/vertical Method)

GB/T 7974 “Determination of Brightness (Whiteness) of Paper, Board and Pulp”

GB/T 7975 “Determination of Color of Paper and Board (Diffuse reflectance method)”

GB/T 24288 — Determination of Main Wavelength and Excitation Purity of Paper and Board — D65/10 Diffuse reflectance Method

GB/T 10339 “Determination of Light Scattering and Light Absorption Coefficients of Paper, Board and Pulp”

GB/T 8424.2 Instrumental Evaluation Method for Relative Whiteness of Textile Color Fastness Test

GB/T 13173.14 “Test Method for Surfactant Detergents — Determination of Whiteness of Powder Detergents”

GB/T 8424.1 General Principles for The Determination of Surface Colors for Color Fastness Tests of Textiles

Paper and Board — Determination of CIE Whiteness, D65/10 (outdoor Daylight)

GB/T 1543 “Determination of Opacity of Paper and Board (Paper Backing)”

GB/T 6688 “Instrumental Method for the Determination of Relative Strength and Chromatic Aberration of Dyes”

GB/T 13025.2 General Test Methods for Salt Industry, Determination of Whiteness

GB/T 2913 test Methods for Whiteness of Plastics

GB/T 5950 Measurement Method for Whiteness of Building Materials and Non-metallic Mineral Products

GB/T 3979 Measurement method of Object Color

GB/T 8424.3 Calculation of Color Difference for Textile Color Fastness Test

GB/T 2679 – Determination of Paper Transparency

GB/T 9338 instrument Method for The Determination of Relative Whiteness of Fluorescent Brighteners

GB/T 11186 Measurement Method of Coating Film Color

GB/T 9984.5 “Test Method for Sodium tripolyphosphate for Industry — Determination of Whiteness”

GB/T 22427.6 Determination of Starch Whiteness

GB/T 13835.7 Test Method for Whiteness of Rabbit Hair Fiber

GB/T 12911 “Determination of Ink Absorbability of Paper and Cardboard”

GB/T 4739 “Method for Determination of Colorimetry for Ceramic Pigments for Daily Use”

GB/T 11942 Measurement Method for Chromaticity of Colored Building Materials

QB/T 2789 general Test Method for Cosmetics Color tristimulus Value and Color difference △E* Determination

QB/T 1503 “Method for Determination of Whiteness of Ceramics for Daily Use”

Test Method for Plastic Yellow Index HG/T 3862

Fz-t50013 test Methods for Whiteness of Cellulose Chemical Fibers – Blue Ray Diffuse Reflection Factor Method

LS-510 Whiteness/Brightness Tester

Main performance parameters

1. The instrument has novel appearance and compact structure, and advanced circuit design effectively ensures the accuracy and stability of measurement data.
2. The instrument simulates D65 illumination.CIE 1964 supplementary chroma system and CIE 1976 (L* A * B *) chromatic space chromatic aberration formula were used.
3. The instrument adopts D/O illumination to observe the geometric conditions.The diameter of the diffuse ball is 150mm, the diameter of the test hole is 30mm, and the light absorber is provided to eliminate the influence of the specular reflection of the sample.
4. LCD module with large screen and high pixels is adopted to display measurement and statistical results in Chinese with prompts for operating steps. Friendly man-machine interface makes the operation of the instrument simple and convenient
5. The instrument adds a printer and adopts imported thermal printing movement, no need to use ink and ribbon, no noise when working, fast printing speed and other characteristics
6. The instrument is equipped with standard RS232 interface, which can communicate with microcomputer software
7. The instrument is protected by power off, and the calibration data will not be lost after power off
8. Can store 9 reference samples.

Technical Specification