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| Product Name | YUEFENG FP640 Flame Photometer | JingQi FP640 Flame Photometer |
| Product Price | $775.00 | $946.00 |
| Details | Details | |
| Model comparison | ||
| Channels | Dual | Dual |
| Elements | Na K Li Ca | Na K |
| Spectral Mode | Interference Filter | Interference Filter |
| Detector | Photocell | |
| Direct Read | No | |
| Repeatability | ≤3% | |
| Linearity | ||
| Parameter comparison | ||
| Measuring range | K:0.0~2.0mmol/L | |
| Measurement range | Na:0.0~10.0mmol/L | K:0~100ug/ml；Na:0~160ug/ml |
| Spectral splitting method | Interference filter | Interference filter |
| Stability | The relative maximum variation of the instrument's indication within 15 seconds is ≤3%. | Within 15 seconds: ≤ 3%; Within 5 minutes: ≤ 5% |
| Linear error | K≤0.005mmol/L | |
| Linearity error | Na≤0.03mmol/L | K≤0.005mmol/L;Na≤0.03mmol/L |
| Detection limit | K≤0.004mmol/LNa≤0.008mmol/L | |
| Detection limit | K≤0.004mmol/LNa≤0.008mmol/L | |
| Response time | <8s | |
| Linear range | K:0.02~0.1mmol/LNa:0.1~0.5mmol/L | |
| Linear range | K:0.02~0.1mmol/LNa:0.1~0.5mmol/L | |
| Curve calibration method | Straight-line method | |
| Ambient temperature | 10~35 ℃ | |
| External Dimensions | 650*400*375mm | |
