Container maintains reference material for gas chromatography at constant temperature for extended periods. Developed for holding peroxyacetylnitrate (PAN), material unstable at room temperature but stable at 0 degree C. Keeps vial of PAN at this temperature by immersing in mixture of water and ice. Perforated tube surrounds vial, protects from damage by ice but allows cold water to circulate around. Plug with handle removable so ice added through filler tube. O-rings seal joints around removable parts. Substances undergoing phase changes at other temperatures substituted for ice and water if different reference materials and storage temperatures used. Used on research aircraft collecting and analyzing air samples in troposphere and stratosphere.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Calibration-Tube Dewar


    Contributors:

    Published in:

    Publication date :

    1989-02-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




    DEWAR TIPPER

    OBRAD FRANK / VANWEZEL CARL | European Patent Office | 2023

    Free access

    Pulse-tube cryocooler for integrated detector dewar cooler assembly

    Arts, Roel / Willems, Daniel / Mullié, Jeroen et al. | SPIE | 2024



    Optimum design of dewar supports

    BUSHNELL, D. | AIAA | 1985


    Optimum design of dewar supports

    BUSHNELL, D. | AIAA | 1983