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Specifications
The EWAI AA-7050D Atomic Absorption Spectrophotometer is an analytical instrument designed for quantitative elemental analysis, including the measurement of trace and micro-level concentrations. It features a double-beam total-reflection optical system with automatic baseline compensation and real-time lamp drift correction to support stable analytical performance.
The AA-7050D automates key operations, including zero return, wavelength scanning, lamp positioning, mirror adjustment, and energy balancing according to the selected element and analytical method. Its computer-controlled eight-lamp turret enables automatic lamp selection, while six automatic spectral bandwidth settings provide flexibility for different analytical requirements.
With deuterium-lamp and self-reversal background correction methods, a high-sensitivity photomultiplier tube, and flame emission capability, the AA-7050D supports a broad range of laboratory testing applications. EWAI states that the instrument can analyze more than 70 elements.
| Parameter | Specification |
|---|---|
| Model | AA-7050D |
| Optical System | Double-beam total reflection optical system |
| Element Analysis | Capable of analyzing more than 70 elements |
| Spectral Bandwidth | Six automatic slit settings: 0.1, 0.2, 0.4, 0.7, 1.0 and 2.0 nm |
| Wavelength Accuracy | ±0.1 nm |
| Wavelength Repeatability | ≤ 0.05 nm |
| Spectral Resolution | Better than 0.1 nm |
| Lamp Turret | Computer-controlled 8-lamp turret |
| Lamp Operation | Automatic preheating of the next element lamp; supports operation of two lamps |
| Background Correction | D₂ lamp and self-reversal methods |
| Detector | High-sensitivity photomultiplier tube (PMT) |
| Baseline Stability – Dynamic | ≤ 0.003 A / 30 min |
| Baseline Stability – Static | ≤ 0.002 A / 30 min |
| Flame Cu Characteristic Concentration | < 0.02 μg/mL |
| Flame Cu Detection Limit | < 0.003 μg/mL |
| Flame Analysis Precision (RSD) | ≤ 0.45% |
| Automatic Functions | Peak search, zero return, scanning, lamp positioning, mirror adjustment and energy balancing |
| Flame Emission | Supported |
| Applications | Metallurgy, petrochemicals, geology, medicine, environmental protection, scientific research, agriculture, disease control, food safety, materials science and commodity inspection |