Digital Whiteness Meter testing standard
This tester complies with GB/T 3978 “Standard Lighting Bodies and Lighting Observation Conditions” and simulates D65 lighting body illumination. Using d/0 illumination to observe geometric conditions, the diameter of the diffuser sphere is 150mm, and there are two types of test hole diameters: 30mm and 19mm. A light absorber is installed to eliminate the influence of mirror reflection light (SCE) on the sample. The peak wavelength of the spectral power distribution of the R457 whiteness optical system is 457nm, with a full width at half maximum of 44nm. The RY optical system complies with GB3979 “Methods for Measuring Object Color”.
ISO Brightness (R457 whiteness)
GB/T 3978 “Standard Lighting Bodies and Lighting Observation Conditions”
GB3979 “Methods for Measuring Object Color”.
GB/T 1543 Determination of opacity (paper backing) of paper and paperboard (diffuse reflectance method);
GB/T 2913 Plastic Whiteness Test Method;
GB/T 5950 Measurement method for the whiteness of building materials and non-metallic mineral products;
GB/T 7973 Determination of diffuse reflectance factor of paper, paperboard, and pulp (diffuse/vertical method);
GB/T 7974 Determination of brightness (whiteness) of paper, paperboard, and pulp (diffuse/vertical method);
GB/T 9338 Instrument method for determining relative whiteness of fluorescent whitening agents;
GB/T 10339 Determination of Light Scattering and Absorption Coefficients of Paper, Paperboard and Pulp;
GB/T 12097 Method for determination of starch whiteness;
GB/T 13025.2 General test methods for salt industry – Determination of whiteness;
ISO 2470 Determination of diffuse reflectance factor of blue light (ISO brightness) for pulp, paper, and paperboard;
ISO 2471 Determination of opacity of paper and paperboard (paper backing) by diffuse reflectance method;
Features of Digital Whiteness Tester
- Standard powder sampler for powder measurement
- Standard thermal printer
- It can measure multiple times and provide the arithmetic mean of a series of measurement results
- Equipped with power-off protection, zero adjustment, calibration, and standard measurement data, even in the event of long-term power loss, the data is protected from loss.
specification
- Measurement range: 0.0~120.0
- Zero drift: ≤ 0.1%
- Indication drift: ≤ 0.1%
- Indication error: ≤ 0.5%
- Repetitive error: ≤ 0.1%
- Mirror reflection error: ≤ 0.1%
- Sample size: Test plane ≥ Φ 30mm, thickness ≤ 40mm
- Power supply: 220V ± 10%, 50Hz, 0.3A
- Working environment: Temperature range of 0-40 ℃, relative humidity not exceeding 85%
- Machine size: 365x 260x 425mm LWH
- Net weight: 11KG