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| Brand | ANJIE |
|---|---|
| Origin | Shanghai, China |
| Model | AJ-3700 |
| Wavelength Accuracy | ±0.2 nm |
| Wavelength Repeatability | 0.1 nm |
| Baseline Noise | ±0.0002 Abs |
| Baseline Drift | ±0.0005 Abs (30 min) |
| Linearity (r) | >0.9995 |
| Detection Limits | NH₃-N: 0.005 mg/L |
| Total N | 0.02 mg/L |
| S²⁻ | 0.005 mg/L |
| NO₂⁻-N | 0.003 mg/L |
| NO₃⁻-N | 0.006 mg/L |
| Kjeldahl N | 0.02 mg/L |
| Quantification Ranges | NH₃-N: 0.02–80 mg/L |
| Total N | 0.1–160 mg/L |
| S²⁻ | 0.02–200 mg/L |
| NO₂⁻-N | 0.012–200 mg/L |
| NO₃⁻-N | 0.03–160 mg/L |
| Kjeldahl N | 0.08–80 mg/L |
| Precision | 0.5–1.0% RSD (at specified concentrations) |
| Measurement Time | 100–280 s (including online digestion for total nitrogen) |
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