The QuAAtro39 is the upright, microflow edition of the latest continuous flow analyzer models evolved from the original world-class Technicon Segmented Flow Analysis (SFA) systems. The system consists of an autosampler, a peristaltic pump, a chemistry manifold, a detector and data acquisition software. Sample and reagents are pumped continuously through the chemistry manifold where air bubbles are introduced at regular intervals forming unique reaction segments which are mixed using glass coils. The glass tubing is ideal, as it is inert, cleans easily, and enables easy visual checks.
In SFA, reactions run to completion and the ratio of sample to reagents in the detector reaches a constant maximum value. This results in ultra-low detection limits and exceptional reproducibility. Variations in reaction time, temperature and sample matrix do not affect the results as they do in other colorimetric techniques, such as flow injection analysis, where the reaction is not brought to completion.
The QuAAtro39 is a microflow SFA system, the internal diameter of all glassware being 1 mm. This reduces reagent consumption and increases throughput, with most methods running at 100 – 120 samples hour. The integrated enclosed manifold and detector are heated to 40° C. Flow stability is ensured as the optimal bubble frequency for each method is programmed by electronically-synchronized silent air valves.