YQ-Z-48A Whiteness and Color Meter

Detailed Product Description

1.  Application

 

Whiteness and color meter is also being called whiteness and color instrument, whiteness colorimeter, colorimeter, color difference meter, color measurement instrument, color meter, comparative color measurement instrument, achromatic instrument, color analyzer, color measurement. It is widely used in papermaking, printing, ceramics, chemical industry, textile, building materials, food, salt, etc. The meter measures whiteness, yellowness, color and color difference of objects, and also measures non-transparency, transparency, light scattering coefficient, light absorption and ink absorption value of paper.

 

Main function is as follows:

 

Make measurement of color, color difference and Hunter system Lab

Make measurement of ISO whiteness (Blue Whiteness R457) and Z whiteness (Rz), the fluorescent whitening degree F of fluorescent whitening material

Make measurement of CIE (Ganz whiteness W10 and Color cast value Tw10)

Make measurement of ceramic whiteness, the Hunter whiteness WH

Make measurement of building materials whiteness and non-metallic mineral products whiteness WJ

Make measurement of yellowness YI

Make measurement of transparency T, non-transparency OP, light scattering coefficient and light absorption coefficient

Make measurement of ink absorption

 

2.  Executive standards

GB/T 3978: Standard illuminants and geometry conditions

GB/T 7973: Paper, board and pulps - Measurement of diffuse reflectance factor (d/o)

GB/T 7974: Paper, board and pulps - Measurement of brightness (d/o)

ISO 2470: Paper, board and pulps - Measurement of diffuse blue reflectance factor (ISO brightness)

GB/T 7975: Paper and board - Determination of color (diffuse reflectance method)

GB/T 3979: Methods of measuring the color of materials

GB/T 8940.2: Pulp Preparation of laboratory sheets for the measurement of brightness

GB/T 2913: Test for whiteness of plastics

GB/T 13025.2: Method of measuring whiteness in salt industry

GB/T 5950: Method for measurement of whiteness of building materials and non-metal mineral products

GB/T 9338: Method of instrumental measurement of whiteness of fluorescent whitening agents

GB/T 9984: Method for measurement of whiteness for industrial sodium tripolyphosphate

GB/T 13173: Surface active agents Detergents Testing methods

GB/T 13835.7: Test method for whiteness of rabbit hair

GB/T 4739: Methods for measuring the colorimetry of ceramic pigment

GB/T 6688: Determination of raltive strength and color difference of dyes (Instrumental method)

GB/T 8424.1: Textiles-Tests for color fastness General principles for color measurement of surface color

GB/T 8424.2: Textiles-Tests for color fastness Instrumental assessment of relative whiteness

GB/T 8424.3: Textiles-Tests for color fastness Calculation of color

GB/T 11186.1: Methods for measuring the color of paint films Part 1: Principles

GB/T 11186.2: Methods for measuring the color of paint films Part 2: Color measurement

GB/T 11186.3: Methods for measuring the color of paint films Part 3: Calculation of color differences

GB/T 11942: Colorimetric methods for color building materials

GB/T 2789: Determination of color tristimulus values and color difference E* of cosmetic

ISO 2471: Paper and board Determination of opacity (paper backing) - Diffuse reflectance method

GB/T 1543: Paper and board - Determination of Opacity (paper backing) Diffuse reflectance method

GB/T 10339: Testing method of light scattering and absorption coefficient for paper and pulps

GB/T 12911: Paper and board-Determination of ink absorbency

HG/T 3862: Plastics-Yellow index test method

GB 9087: The white powdered standard plate for colorimetry and photometry

3.  Main technical specifications

 

(1)     Simulate D65 illuminator to illuminate. Adopt CIE 1964 supplementary standard colorimetric system and CIE 1976(L*a*b) color space and color difference formula.

(2)     Adopt d/o illuminating--geometrical viewing conditions. Diameter of the globe of diffusion is 150mm and diameter of the testing hole is 25mm. Light absorber is provide to eliminate the effect of mirror reflection.

(3)     Repeatability of test: δ(Y₁₀)<0.1,δ(X₁₀,Y₁₀)<0.001

(4)     Accuracy:  Y₁₀<1.0

(5)     Sample size: Diameter of the testing plane should be larger than 30mm while the thickness less than 40mm

(6)     Power supply: 220V±10%, 50Hz

(7)     Working condition: Temp.10~30, relative humidity within 85%

(8)     Size and weigh: 370×270×410 (mm),15kg

4.  Main features

 

Use optical-electro-mechanical integration and microcomputer control technology, have the functions of test data processing and printout. It can measure the whiteness (brightness) and chrominance of various objects.

(1)     Measure the color of object, report diffuse reflectance factor RX, RY, Rz, stimulus value X10, Y10, Z10, chromaticity coordinate X10, Y10, lightness L*, chrominance a*, b*,chromaticity C*ab, hue angle h*ab, dominant wavelength λd, excited purity Pe, color difference E*ab, lightness difference L*, chromaticity difference C*ab, hue difference H*ab, Hunter system L, a,b.

(2)     Measure yellowness YI

(3)     Measure opacity op

(4)     Measure light scattering coefficient S

(5)     Measure optical absorption coefficient A

(6)     Measure transparency

(7)     Measure ink absorption value

(8)     Reference sample can be object, but also can be data. The instrument can store up to 10 reference sample information.

(9)     Several measurements can get average value, figures show the measurement, and also can print it.

(10)  The instrument has the memory function. Although longtime power failure and shutdown, the zero, calibration, standard samples, reference samples and other useful information will not be lost.

5.  Supporting sampling apparatus

 

HY-1 Constant Sampler