Witheid- en kleursoorttester

Whiteness and chromaticity tester measures the whiteness, yellowness, color and color difference, reflectance value, stimulus value of the sample. It measures the paper opacity, transparency, light scattering coefficient, light absorption coefficient and ink absorption value. The compact, advanced circuit design ensures the accuracy and stability of measurement data. This color tester measures the ISO brightness (blue whiteness R457) & Z whiteness (Rz) of fluorescent whitening sample due to the emission of the fluorescent material.

Sample (size) length: Diameter ≥30 mm, Thickness ≤ 40 mm Measurement mode: Diffuse reflection factor Rx, Ry, Rz, stimulus value Y10, X10, Z10, chromaticity coordinates x10, y10, z10; lightness L *, chroma a * b *, chroma C * ab, hue angle h * ab, dominant wavelength λd, excitement purity Pe, color difference ΔE * ab, lightness difference ΔL *, chroma difference ΔC * ab, hue difference ΔH * ab, Hunter system L, A, b Stability: ≤ 0.1 within 30 min Accuracy: Chromaticity co-ordinate 0.0001 Repeatability: Rx, Ry and Rz s ≤ 0.1 chromaticity co-ordinate s ≤ 0.0010, R457 s ≤ 0.10 System: D/0 lighting geometrical viewing conditions, diffuser diameter (d) 150 mm, testing hole diameter 30 mm Light measurement: CIE whiteness (Ganz whiteness W10, Color cast value TW10), WH hunter whiteness, YI Yellowness, ISO brightness R457 Storage: 9 reference samples Dimension (L*W*H) : 360 x 264 x 400 mm Net weight: 23 kg Power supply: 220 V ± 10 %, 50 Hz

Whiteness & color tester is used to measure color values, brightness, whiteness in papermaking, printing, ceramics, chemicals, textile printing and dyeing, building materials, food, salt and other industries.

Sample (size) length :Diameter ≥30 mm, Thickness ≤ 40 mm System :D/0 lighting geometrical viewing conditions, diffuser diameter (d) 150mm, testing hole diameter 30mm Light source :D65 as illuminating source Zero drift :≤ 0.1 %