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Lab Expo Whiteness & chromaticity Tester 61-PPT100 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.
$4,301.00 $ 3584
| 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 × 264 × 400 mm |
| Net weight | 23 kg |
| Power supply | 220 V ± 10 %, 50 Hz |
Function Implementation Paper quality control labs ≤ 0.1 stability within 30 min ensures consistent whiteness measurements Color measurement facilities Chromaticity co-ordinate accuracy of 0.0001 enables precise color difference analysis Clinical research laboratories Diameter ≥30 mm sample size accommodates standard specimen testing Industrial material testing units Storage for 9 reference samples supports batch comparison workflows Pharmaceutical packaging assessment Power supply 220 V ± 10 %, 50 Hz allows integration into facility electrical systems
Lab Expo Paper Testing Instruments are used for strength, thickness, smoothness, tearing, bursting, compression, whiteness, water absorption, and tensile analysis of paper, pulp, carton, and corrugated board materials. Systems support measuring ranges up to 6000 kPa bursting pressure, 50 kN compression force, 16000 mN tearing capacity, and 1000 N tensile testing with high-resolution digital measurement. Units integrate air permeability, stiffness, folding endurance, friction, chromaticity, and ply bond testing for paper manufacturing, packaging inspection, and quality control applications.
