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| Brand | Zhongkehuifen |
|---|---|
| Origin | Beijing, China |
| Model | AA-760AFG |
| Instrument Type | Flame and Graphite Furnace AAS |
| Optical System | Dual-beam |
| Monochromator | Czerny-Turner with 1800 lines/mm grating |
| Wavelength Range | 190–900 nm |
| Spectral Bandwidth | 0.1/0.2/0.4/1.0/2.0 nm (auto-switching) |
| Wavelength Accuracy | ±0.10 nm |
| Wavelength Repeatability | 0.05 nm |
| Background Correction | D₂ lamp + Zeeman-effect correction |
| Resolution | Resolves Mn 279.5 nm and 279.8 nm with valley energy <20% |
| Sensitivity (Cu) | 0.02 µg/mL per 1% absorption |
| Detection Limit (Cu, flame) | 0.003 µg/mL |
| Detection Limit (Cd, GF-AAS) | <0.4 pg |
| RSD (flame) | <0.5% |
| RSD (graphite furnace) | <0.8% |
| Detector | Wide-spectrum photomultiplier tube (Hamamatsu) |
| Atomizer | Titanium alloy 100-mm burner (flame) |
| Safety | Acetylene leak detection, automatic gas cutoff, flame failure shutdown |
| Power | AC 220 V / 50 Hz / 150 VA |
| Dimensions | 1110 × 400 × 500 mm (W×D×H) |
| Net Weight | 55 kg |
| Operating Environment | 10–35 °C, ≤80% RH |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | AA-720SFG |
| Price Range | USD 7,000–14,000 |
| Instrument Type | Flame and Graphite Furnace AAS |
| Monochromator | Plane Grating |
| Optical System | Single-beam |
| Detector | Solid-state Photodetector |
| Background Correction | D₂ Lamp + Zeeman Correction |
| Resolution | Resolves Mn 279.5 nm and 279.8 nm doublet with valley intensity <20% |
| Sensitivity | 0.02 µg/mL per 1% absorption |
| Repeatability (RSD) | <0.8% |
| Detection Limit (Cu) | 0.003 µg/mL |
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