| 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 |
| Power supply | 220 V ± 10 %, 50 Hz |
| Dimension (L × W × H) | 360 × 264 × 400 mm |
| Net weight | 23 kg |
Our Whiteness and chromaticity tester LWACT-A10 is used to measure color values, brightness, whiteness in papermaking, printing, ceramics, chemicals, textile printing and dyeing, building materials, food, salt and other industries.
Labtron Paper Testing Instruments requires air supply for automatic clamping, ensuring smooth and secure operation. These provide real-time pressure curve displays, allowing users to monitor pressure changes instantly. Their over-range reset function protects the sensor by automatically adjusting it in case of excessive readings. They measure ink absorption values, useful for quality control in printing processes. Our paper testing instruments measure WH Hunter whiteness, YI yellowness, and CIE whiteness for precise color and whiteness evaluations for various applications.








Labtron Equipment Ltd., Quatro House, Lyon Way, Camberley, Surrey GU16 7ER United Kingdom
Email: info@labtron.com Whatsapp: +44 73 4441 2688 Phone: +44 2080 043608