AELAB A3G Atomic Absorption Spectrophotometer | Graphite Furnace

The AELAB A3G Atomic Absorption Spectrophotometer is a graphite furnace platform for quantitative determination of metals at trace and ultra-trace levels. By dedicating the optical path to a transversely heated graphite tube with precision feedback, the AELAB A3G maximizes furnace stability and minimizes drift, enabling reliable results in environmental, clinical, pharmaceutical, and materials analysis.

⚙️ Design & Construction

The A3G employs a computer-controlled Czerny–Turner monochromator with an 1800 grooves/mm diffraction grating across 185–910 nm. Software-selectable bandwidths (0.1/0.2/0.4/1.0/2.0 nm), wavelength accuracy of ±0.15 nm, reproducibility <0.05 nm, and baseline stability of 0.005 Abs/30 min support consistent signal capture. An automatic 8-lamp turret streamlines element changes. The graphite head is fixed in the optical path, and pyrolytically coated platform tubes improve atomization uniformity and reduce matrix effects.

🔬 Working Principle / Testing Method

In graphite furnace AAS, microliter volumes are introduced into a transversely heated tube and processed through drying, ashing, atomization, and cleaning steps. The AELAB A3G supports up to 10 programmed steps from ambient to 3000 °C with voltage and optical temperature feedback. Typical performance includes a Cd detection limit <0.004 ng/mL and Cu sensitivity 50 ng/mL >0.40 Abs. Dual background correction—deuterium (D2) and self-reversal (SR)—extends accuracy in complex matrices.

💡 Key Advantages

• Graphite furnace–only architecture with fixed optical alignment for high stability
• Transversely heated tube with feedback control for precise temperature programming
• Dual background correction (D2 and SR) for robust matrix compensation
• AA-Win 3.0 control of methods, calibration, readout (continuous, peak height, peak area)
• Safety monitoring: argon pressure, water flow, over-temperature, and broken-tube protection
• Optional water circulator for efficient tube cooling; sample volume up to 20 µL

🔗 Connectivity & Integration

AA-Win 3.0 software manages instrument setup, calibration (multi-standard, standard addition, interpolation), method storage, and result archiving. Data records include analytical results, instrument parameters, signal profiles, and calibration curves. Communication port type is not specified in the provided data and should be confirmed for LIMS/printer integration.

🧠 Model Insight

Within the A3 Series, the AELAB A3G focuses on graphite furnace workflows where pg–ng/mL detection is required. For laboratories needing both routine and ultra-trace analysis, the A3FG variant adds a flame path with automatic atomizer changeover under AA-Win 3.0 control.

🧪 Testing Applications

• Environmental monitoring: metals in water, soil, and wastewater
• Clinical and pharmaceutical: elemental impurities and biomonitoring
• Materials and chemicals: process control and impurity profiling
• Food and beverage: contaminant and additive surveillance

Compliance & Quality Assurance

The AELAB A3G supports GLP-style recordkeeping through controlled methods and auditable data storage. Optical performance (wavelength accuracy, bandwidth control) and programmable furnace steps enable validated, repeatable protocols for regulated and research laboratories.