Rapid-quench Flow Instrument
Rapid-quench Flow Instrument - Related Videos
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SIVQ-LCM Protocol for the ArcturusXT Instrument
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FAQs
Motor-driven syringes deliver reactants at controlled times into a mixer, where the reaction begins. The mixed solution then travels through an adjustable flow path that establishes the aging interval before quench addition. By changing this interval, researchers can examine reaction progress at milliseconds or longer time points and compare the resulting chemical states.
Rapid quenching arrests further chemical or biochemical activity at a selected moment. This preserves the composition of the reaction mixture closely enough to measure transient states that may otherwise disappear as the reaction continues. In genetics research, capturing these short-lived states can help distinguish individual catalytic steps rather than observing only the final nucleic acid product.
Timing depends on how precisely the syringes deliver solutions, how effectively the mixer combines them, and how the flow path sets the aging interval before quenching. These components determine when the reaction starts and when activity stops. Their coordinated operation allows measurements across very short intervals and supports analysis of rapid changes in reaction composition.
A batch assay generally provides a reaction mixture that is sampled or analyzed after a selected incubation, whereas rapid-quench flow measurements define the reaction interval during continuous delivery and promptly stop activity. The flow-based approach therefore offers more direct access to early reaction behavior, including intermediates and fast catalytic phases that conventional measurements may miss.
Researchers load the reactants and quench solution into the instrument, use motor-driven syringes to deliver the reactants into the mixer, and allow the mixture to travel through a selected flow path. After the programmed aging interval, the quench solution stops the reaction. The quenched samples can then be examined to determine reaction progress at defined times.
In genetics, the instrument can examine fast reactions involving DNA, RNA, and associated enzymes. Suitable experiments include nucleotide incorporation and other nucleic acid processing reactions. Time-resolved measurements can reveal catalytic rates, short-lived reaction intermediates, and the sequence of mechanistic steps, providing information that is difficult to obtain from measurements made only after longer incubation periods.