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LCD Benchtop whiteness meter CIE-15 Whiteness test instrument
The whiteness meter is widely used in textile printing and dyeing, paint and coating, chemical building materials, paper and cardboard, plastic products, white cement, ceramics, enamel, porcelain clay, talcum powder, starch, flour, salt, detergent, cosmetics and other objects to measure the whiteness. The opacity of the paper can be calculated by measurement.
1. Measure the blue 457nm diffuse reflection factor (r457) of the sample, which is called "blue whiteness r457"
2. Determine whether the sample contains fluorescent whitening agent, and measure the fluorescent whiteness value produced by fluorescent emission, which is called "fluorescent whitening F" or "whitening F".
| Model | LA-BD-3CY | LA-BD-3C |
| Measuring range | 0～199 | |
| Measurement content | blue whiteness r457, fluorescence whiteness value F | blue whiteness r457, |
| Light source | LED light source | |
| Test conditions | comply with GB/T3978 regulations 45/0 | |
| Display | LCD liquid crystal display | |
| Measuring aperture | ￠30 | |
| Minimum display value | 0.1 | |
| Measurement repeatability | 0.2 | |
| Indication error | ≤±1 | |
| Use environment | Temperature (5℃～35℃); humidity (≤85%RH) | |
| Transportation and storage environment | Temperature (-20℃～50℃); humidity (≤90%RH) | |
| Microcomputer type fluorescent whiteness meter | 1set |
| Working standard whiteboard, | 1no |
| Fluorescent standard whiteboard | 1no |
| Reference standard whiteboard | 1pc |
| Black tube | 1pc |
| Powder dish | 1pc |
| User's manual | 1pc |
| Warranty card | 1pc |
