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  • Title: Test-tube equilibration of volatile anaesthetic concentrations.
    Author: Martin DC, Pruett JK, Aronstam RS.
    Journal: Br J Anaesth; 1993 Mar; 70(3):365-7. PubMed ID: 8471384.
    Abstract:
    We have measured concentrations of volatile anaesthetics after injection into test-tube assay solutions. In non-agitated tubes, aqueous anaesthetic concentrations decreased significantly throughout 40 min of incubation. Agitation (20-s vortex) of the tubes decreased the aqueous anaesthetic concentration by approximately 80% from concentrations in non-agitated tubes and resulted in more stable liquid anaesthetic concentrations over time. A decrease of less than 15% occurred between 10 and 50 min of incubation.
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