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.
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.
