| Integration |
Flame/Graphite Furnace Integrated Machine |
| Lamp Holder |
Eight lamp automatic turret, automatic alignment |
| Lamp Current |
Pulsed power supply |
| Optical System |
Fully enclosed, 1800 mm grating |
| Wavelength Range |
185 to 900 nm, automatic peak search, optical optimization |
| Wavelength Accuracy |
≤ 0.15 nm |
| Wavelength Repeatability |
< 0.1 nm |
| Spectral Bandwidth |
0.1, 0.2, 0.4, 0.7, 1.0, 1.4, 2.0 nm (auto switching) |
| Baseline Stability |
≤ ±0.002 A / 30 min (static)
≤ ±0.004 A / 30 min (dynamic) |
| Absorbance Range |
0 to 4 A |
| Detector |
Imported photomultiplier tube |
| Ignition Type |
Microcomputer-controlled, automatic ignition |
| Gas Control |
Automatic gas control system |
| Burner Head |
Full titanium, 50 mm or 100 mm |
| Atomization Chamber |
Polymer explosion-proof, corrosion-resistant |
| Nebulizer |
Efficient glass atomizer (customizable) |
| Flame Detection Limit (Cu) |
0.002 µg/mL |
| Flame Precision |
RSD ≤ 0.5% |
| Graphite Furnace Heating |
Vertical heating |
| Temperature Control |
Vertical optical monitoring, graphite tube wall |
| Temperature Range |
Ambient to 3000°C |
| Temperature Program Steps |
Up to 20 steps automatic control |
| Enrichment Capability |
Up to 20 times |
| Graphite Detection Limit (Cd) |
0.4 × 10⁻³ g |
| Graphite Precision |
RSD ≤ 2% |
| Cooling System |
Optional water circulation system |
| Safety Features |
Graphite tube damage, water flow, air pressure alarms, overheating protection |
| Communication Interface |
PC connectivity, software-controlled |
| Power Supply |
110/220V, 50/60 Hz, 5000 VA |
FAQ for Atomic Absorption Spectrophotometer NAAS-404
1: What is the advantage of dual atomization modes in the Atomic Absorption Spectrophotometer NAAS-404?
Dual atomization in Atomic Absorption Spectrophotometer NAAS-404 combines flame and graphite furnace techniques, providing flexibility for analyzing both high-concentration and ultra-trace metal samples efficiently in one system.
2: How does the vertical heating system improve accuracy in the Atomic Absorption Spectrophotometer NAAS-404 ?
Vertical heating in Atomic Absorption Spectrophotometer NAAS-404 ensures uniform temperature distribution, reducing thermal gradients and improving reproducibility during graphite furnace analysis for sensitive elements.
3: What safety mechanisms are integrated into the Atomic Absorption Spectrophotometer NAAS-404?
Atomic Absorption Spectrophotometer NAAS-404 includes alarms for graphite tube damage, water flow interruption, and gas leakage, along with automatic shutdown and overheating protection to safeguard operators and equipment.
4: Why is multi-step temperature programming important in the Atomic Absorption Spectrophotometer NAAS-404?
Up to 20 programmable steps allow precise temperature control for drying, ashing, and atomization stages, enabling optimized conditions for different sample matrices.
5: Can Atomic Absorption Spectrophotometer NAAS-404 handle digital data integration?
Yes, Atomic Absorption Spectrophotometer NAAS-404 features PC connectivity and software control, allowing real-time monitoring, automated reporting, and easy data export for compliance with modern lab standards.
