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| Product Name | JingKeLian WSB-2Y Digital whiteness Meter | QiWei WSB-CY Whiteness Meter (Benchtop microcomputer fluorescent type) |
| Product Price | $432.00 | $656.00 |
| Details | Details | |
| Model comparison | ||
| type | desktop | desktop |
| Whiteness | Blue light whiteness Fluorescent whitening amount | Blue light whiteness Fluorescence whiteness Background whiteness Fluorescent whitening amount Opacity |
| Measuring range | 0~200 | 0~200 |
| Sexual repeability | ≤0.3 | |
| Indication accuracy | 0.1 | 0.1 |
| Measurement aperture | f21 ~ 30mm | |
| Parameter comparison | ||
| Measurement Range | 0~199 | 0~199.9 |
| Whiteness formula | Blue light whiteness WB = R457, fluorescent whiteness F | R457 Blue light whiteness, fluorescent whiteness, background whiteness, fluorescent whitening amount, Opacity |
| Illuminant | LED Illuminant | |
| test condition | Comply with GB/T3978 regulations 45/0 | d/0 |
| show | LCD liquid crystal display | |
| Measurement aperture | Φ30mm | |
| resolution | 0.1 | 0.1 |
| Zero drift | ≤0.2/10min | ≤±0.01 |
| Indication drift | ≤0.3/3min | |
| Measurement Repeatability | ≤0.3 | |
| Ambient Temperature | ＋5℃~＋35℃ | |
| Environmental humidity | ≤85%RH | |
| Power supply | AC 220V/50Hz AC/DC dual-use | |
| Encasement | carton | |
| Net weight | 6.5 kg | |
