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| Brand | Tianyan (Shandong Tianyan Instrument Co., Ltd.) |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Producer |
| Country of Manufacture | China |
| Model | TY-ZSD |
| Detection Principles | Colorimetric Spectrophotometry (Visible Range, 400–700 nm) |
| Measurement Method | Digestion + Reagent-Based Chromogenic Reaction + Absorbance Quantification per Lambert-Beer Law |
| Supported Elements | Pb, As, Cr(VI), Cd, Hg, Ni, Al, F, Ti, Se, Fe, Zn, Mn, Cu |
| Optical Accuracy | ±0.5% Transmittance |
| Repeatability | ≤±0.05% |
| Drift Stability | <0.001 AU/30 min (after 5-min warm-up) |
| Linearity Error | ≤0.2% (verified with CuSO₄ standard) |
| Power Consumption | ≤5 W |
| Input Power | AC 220 V / 50 Hz or DC 12 V |
| Output | Built-in thermal printer (auto-printing of results) |
| Sample Throughput | ~8–12 samples/hour (including digestion prep) |
| Compliance Standards | GB/T 5009.11–2003, GB/T 5009.12–2003, GB/T 5009.15–2003, GB/T 5009.17–2003, GB/T 5009.123–2003 |
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