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| Brand | HOGON |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Flame–Graphite Furnace Hybrid AAS |
| Monochromator | Fixed-grating with selectable slits |
| Optical System | Double-beam |
| Detector | Solid-state CCD array |
| Background Correction | Simultaneous D₂-lamp and Self-reversal (SR) correction |
| Spectral Bandwidth | 0.1, 0.2, 0.4, 0.7, 1.0, 2.0 nm (auto-switching) |
| Wavelength Range | 190–900 nm |
| Wavelength Accuracy | ±0.2 nm |
| Wavelength Repeatability | 0.1 nm |
| Resolution | 0.2 nm |
| Cu Detection Limit (Flame) | ≤0.004 µg/mL |
| Cu Characteristic Concentration (Flame) | ≤0.025 µg/mL per 1% absorption |
| Precision (RSD, Cu, A > 0.8) | ≤0.5% |
| Baseline Drift | ≤0.002 A / 30 min |
| Graphite Furnace Max Ramp Rate | ≥3000 °C/s |
| Graphite Furnace Temp Range | Ambient to 3000 °C |
| Cd Characteristic Mass | ≤1 pg |
| Cu Characteristic Mass | ≤10 pg |
| Graphite Furnace Precision (RSD) | ≤3% (Cd, Cu) |
| Lamp Turret | 6-position automatic |
| Auto-sampler Options | 45- or 85-position |
| Gas Control | Dual-path (in-tube / out-tube) inert gas regulation |
| Safety Systems | Real-time flame status monitoring, gas pressure sensors (air, acetylene, N₂O), auto-shutdown on flame failure/flashback, power-interruption cutoff, overtemperature/coolant-flow interlock |
| Dimensions | 700 × 550 × 440 mm |
| Weight | 80 kg |
| Power Requirement | 220 V AC, 6000 W nominal, transient peak up to 8 kW |
| [Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | FirstDefender |
| Price | USD 63,500 (FOB) |
| Raman Shift Range | 250–2875 cm⁻¹ |
| Spectral Resolution | 7–10.5 cm⁻¹ (FWHM) |
| Excitation Wavelength | 785 nm ± 0.5 nm, linewidth ≤2 cm⁻¹, wavenumber accuracy <0.1 cm⁻¹ |
| Laser Output Power | ≤300 mW (adjustable) |
| Integration Time | Manual or auto mode (min. 100 ms) |
| Battery | 7.4 V Li-ion, >5 h operation at 25 °C |
| AC Input | 100–240 VAC, 50/60 Hz |
| Weight | <1.8 kg |
| Dimensions | 30 × 15 × 7.6 cm |
| Operating Temperature | −20 °C to +40 °C |
| Compliance | MIL-STD-810F (shock, vibration, humidity, thermal cycling)] |
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | UV-754N |
| Price | USD 1,950 (FOB Shanghai) |
| Optical Architecture | Dual-Beam |
| Detector | Photomultiplier Tube (PMT) |
| Wavelength Range | 190–1100 nm |
| Wavelength Scanning | Motorized Auto-Scan |
| Spectral Bandwidth | 4 nm |
| Wavelength Accuracy | ±0.5 nm |
| Stray Light | ≤0.05%T at 220 nm and 360 nm |
| Wavelength Repeatability | ≤0.2 nm |
| Photometric Accuracy | ±0.002 A (0–0.5 A), ±0.003 A (0.5–1.0 A), ±0.3%T (0–100%T) |
| Photometric Repeatability | ≤0.001 A (0–0.5 A), ≤0.002 A (0.5–1.0 A), ≤0.15%T (0–100%T) |
| Photometric Range | 0–200%T, −0.301–3.000 A, 0–9999 C |
| Baseline Drift | ≤0.001 A/h at 500 nm |
| Baseline Linearity | ±0.002 A |
| Noise | ≤0.15%T (100%T), ≤0.1%T (0%T) |
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