Atomic Absorption Spectrophotometry (AAS) is a quantitative elemental analysis technique based on the selective absorption of characteristic wavelengths of light by free ground-state atoms in a gaseous state. When a hollow cathode lamp emits radiation at the specific resonance wavelength of a target element and that beam passes through an atomized sample, atoms absorb energy proportional to their concentration. By measuring the degree of absorption, the instrument calculates elemental concentration with exceptional precision and selectivity — even in complex matrices. AAS routinely achieves detection limits in the parts-per-billion (ppb) to parts-per-trillion (ppt) range depending on the atomization mode, making it one of the most sensitive and cost-effective techniques for trace metal analysis available to modern laboratories.
Qualitest offers a comprehensive lineup of fully automatic AAS instruments designed for versatility, operator safety, and analytical precision across routine and demanding applications. The portfolio spans four series: the QualiAAS™ Series (3000F, 3000FG, 3000FG-Pro) for multi-mode flame and graphite furnace analysis with fully automatic switching, the QT-AAS29 Series for modular, cost-efficient dual-mode operation, the QT-AAS30 Series with transversely heated graphite tube technology for improved sensitivity in regulated laboratory environments, and the flagship QT-AAS60 Series representing the highest level of automation, accuracy, and safety in the Qualitest AAS lineup. All instruments share a total-reflection optical platform (190–900 nm), 1800 grooves/mm diffraction grating, automatic multi-lamp turret, deuterium background correction, PC-based RGWIN AAS software with built-in QA/QC functions, and a comprehensive multi-layer safety architecture covering flame monitoring, automatic acetylene shutoff, acetylene leak detection, and pressure interlocking for all process gases.
Applications in Industries
Environmental & Water Testing Regulatory monitoring of heavy metals (Pb, Cd, As, Hg, Cr) in drinking water, wastewater, and soil — per EPA, ASTM D1976, and ISO 15586. | Pharmaceutical & Food Safety API raw material verification, trace metal contamination testing, and nutritional element quantification per USP, EP, and FDA 21 CFR requirements. |
Geology, Mining & Metallurgy Ore grade determination, process stream monitoring, and elemental profiling of metals, minerals, and alloy samples across production workflows. | Petroleum & Petrochemical Trace metal analysis in crude oil, fuels, lubricants, and refinery feedstocks. Catalyst metal quantification and process fluid monitoring. |
Agriculture & Soil Science Determination of macro and micro-nutrients (Ca, Mg, K, Fe, Mn, Zn, Cu) in soils, fertilizers, plant tissue, and irrigation water. | Cannabis & Hemp Testing Determination of heavy metals (As, Cd, Hg, Pb) in cannabis flower, extracts, and finished products per state and federal safety regulations. |
Product Comparison Table
Specification / Feature | QualiAAS™ Series (3000F / 3000FG / 3000FG-Pro) | QT-AAS29 Series | QT-AAS30 Series | QT-AAS60 Series |
Atomization System | Flame (3000F); Flame + Graphite (3000FG/Pro) | Flame + Graphite Furnace | Flame + Graphite Furnace | Flame + Graphite Furnace |
Optical System | Double-beam (3000FG/Pro); Single-beam (3000F) 1800 grooves/mm grating | Total Reflection; Single or Double Beam 1800 grooves/mm | Total Reflection; Single or Double Beam 1800 grooves/mm | Total Reflection; Single or Double Beam 1800 grooves/mm |
Wavelength Range | 190–900 nm |
Spectral Bandwidth | 0.1 / 0.2 / 0.4 / 0.8 / 1.6 nm (auto) | 0.1 / 0.2 / 0.4 / 0.7 / 1.4 nm (auto) | 0.1 / 0.2 / 0.4 / 0.7 / 1.4 nm (auto) | 0.1 / 0.2 / 0.4 / 0.7 / 1.4 nm (auto) |
Lamp Turret | Auto multi-lamp turret; 70-sample autosampler | Vertical 4 / 8-Lamp Auto Turret (360° rotation) | Vertical 4 / 8-Lamp Auto Turret (360° rotation) | Vertical 4 / 8-Lamp Auto Turret (360° rotation) |
Background Correction | Deuterium lamp; self-absorption (FG/Pro) | Deuterium (std); Self-absorption (double beam) | Deuterium (std); Self-absorption (double beam) | Deuterium (std); Self-absorption (double beam) |
Graphite Furnace Type | Longitudinal (standard); transverse (Pro version) | Longitudinal heated | Transversely Heated Graphite Tube | Transversely Heated Graphite Tube |
Burner Head | 10 cm Ti (air-C₂H₂); auto height & angle adjust | Auto height adjust; flame detect safety | Auto height adjust; flame detect safety | Auto height adjust; flame detect safety |
Auto Pneumatic Control | ✓ | ✓ | ✓ | ✓ |
Auto Ignition / Safety Shutoff | ✓ | ✓ | ✓ | ✓ |
Acetylene Leak Alert | ✓ | ✓ | ✓ | ✓ |
Graphite Tube Self-Inspection | ✓ (Pro version) | — | ✓ | ✓ |
PC-Controlled Software (Windows) | ✓ | ✓ RGWIN AAS | ✓ RGWIN AAS | ✓ RGWIN AAS |
QA/QC Software Functions | ✓ | ✓ | ✓ | ✓ |
Elements Analyzed | 70+ metals & non-metals | 70+ metals & non-metals | 70+ metals & non-metals | 70+ metals & non-metals |
Hydride Generation (optional) | ✓ (Pro version) | — | — | ✔ (enhanced) |
Best For | Entry-to-mid: multi-mode lab; food, geo, pharma | Mid-range: modular, cost-efficient, flexible config | Mid-high: transverse GF + modular for regulated labs | High-end: max sensitivity, full furnace automation |
* All models support 70+ elements. Hydride generation for As, Se, Hg, Sb available as optional accessory on selected models. Transverse graphite heating is standard on QT-AAS30 and QT-AAS60. Power: 220 V / 50 Hz standard; 110 V configurations available for North American installations.
Why Choose Qualitest for Your AAS Needs?
✔ 70+ Elements, One Platform Every QT-AAS and QualiAAS™ instrument analyses over 70 metallic and non-metallic elements across flame and graphite furnace modes — eliminating the need for multiple analyzers. | ✔ Total Reflection Optical System Lens-free, all-reflective optics minimize energy loss across the 190–900 nm range, delivering superior signal-to-noise ratios and lower detection limits without chromatic aberration. |
✔ Transversely Heated Graphite Tube The QT-AAS30 and QT-AAS60 feature transversely heated graphite atomizers for uniform temperature distribution, faster atomization, higher sensitivity, and extended tube service life. | ✔ Multi-Layer Safety Architecture Every instrument includes automatic acetylene shutoff, flame monitoring, pressure interlock for argon and acetylene lines, graphite tube self-inspection, and operator alerts — meeting modern lab safety requirements. |
✔ Full PC Automation & QA/QC Software RGWIN AAS software (MS Windows) manages wavelength optimization, lamp switching, burner adjustment, calibration, and QA/QC reporting — reducing operator burden and improving data integrity. | ✔ Qualitest World Wide Support With over 26 years of experience and operations across 122+ countries, Qualitest provides dedicated application support, installation, and after-sale service through its US and Canadian offices. |
Precision Elemental Analysis — Built for Your Laboratory
Whether your laboratory monitors heavy metals in drinking water to EPA standards, verifies pharmaceutical API identity to USP and EP specifications, determines ore grades in a mining quality control program, or screens cannabis extracts for heavy metal compliance, the Qualitest QT-AAS and QualiAAS™ Series delivers the accuracy, automation, and safety your operation demands. With 70+ elements covered across flame and graphite furnace modes, total-reflection optics, transversely heated graphite tube technology, multi-layer safety interlocking, and full PC automation through RGWIN AAS software, these instruments are engineered to be your laboratory's most reliable workhorse.
