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| Brand | Sherwood |
|---|---|
| Origin | United Kingdom |
| Model | 425 |
| Optical System | Single-beam |
| Detector | Photodiode Array |
| Wavelength Range | 190–900 nm |
| Wavelength Accuracy | ±2.0 nm |
| Wavelength Repeatability | ±0.5 nm |
| Spectral Bandwidth | 4 nm |
| Stray Light | ≤0.01% T |
| Elements Measured | Na, K, Li, Ca |
| Linear Display | Dual-channel Digital LED |
| Output | 0.05–5.0 V Analog Signal |
| Interface | RS232 |
| Fuel Gas | Propane/Butane/Natural Gas (6 L/min at 15 PSI) |
| Detection Limits | Na/K: 20 ppb (S/N = 2) |
| Sensitivity | Na/K: 0.5 ppm |
| Li | 2 ppm |
| Ca | 5 ppm |
| Interference | <0.5% |
| Linearity | <1% |
| Precision (RSD) | ≤0.5% |
| Stabilization Time | ~15 s per reading |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported Instrument |
| Model | 2950 |
| Pricing | Available Upon Request |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | UV-2602 |
| Price | Upon Request |
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