Abstract: A thermal desorption tube for chromatography and mass spectrometry analysis. The thermal desorption tube includes a sorbent and a plurality of focusing agents loaded at known, relative amounts onto the sorbent. Each focusing agent is a compound that chromatographically elutes within a retention time similar to a retention time of a target analyte and has a mass spectrum similar to a mass spectrum of the target analyte. The thermal desorption tube is configured to be further loaded with a sample having the target analyte.

Abstract: A system for solventless calibration of volatile or semi-volatile compounds and methods thereof. The system includes a fluid path having a first end configured to be operably coupled to a fluid source and a second end configured to be operably coupled to the analytical instrument. A solid sorbent is disposed along the fluid path and is configured to absorb an analyte. The flow of fluid along the fluid path from the first end to the second end causes absorbed analyte to be desorbed from the solid sorbent at a desired concentration to the instrument.

Abstract: A computer-implemented method that includes displaying a graphical user interface (“GUI”) and receiving personalized information from at least one server computing device. The GUI includes a page. The personalized information identifies a theatre location, movies playing at the theatre location, dates, and showtimes associated with the movies and dates. The method includes displaying on the page, the movies, dates on which a particular movie is showing, and a particular showtime on a particular date. A selection is entered by the user into a user input displayed on the page. The selection changes the theatre location, the particular movie, the particular date, and/or the particular showtime without the user exiting the page. The page updates automatically to display the user selection. An indication is received that the user has selected a purchase input display on the page, and a purchase of at least one movie ticket is completed.

Abstract: A method for reducing the variability, as measured by relative standard deviation (RSD), of an analytical testing technique is provided. This improvement in RSD improves the confidence in the values obtained during field testing. The method includes incorporating a focusing agent into the sampling media, which permits providing sampling media such as thermal desorption tubes preloaded with the focusing agent.

Abstract: A system, apparatus, and method include a pump to deliver vapor including airborne contaminants including organic compounds including a target analyte; a collector to transfer the airborne contaminants by autonomous liquid extraction into a mobile organic liquid phase; a micro-fluidic chamber including immobilized biorecognition elements that bind to analytes delivered from the mobile organic liquid phase; a mechanism to introduce the mobile organic liquid phase to a buffer containing a plurality of substrates causing a series of biochemical reactions that create a change corresponding to a concentration of the target analyte; and a detector to perform real-time analysis that correlates to a concentration of the organic compounds to determine a presence of the target analyte.

Abstract: A system, apparatus, and method include a pump to deliver vapor including airborne contaminants including organic compounds including a target analyte; a collector to transfer the airborne contaminants by autonomous liquid extraction into a mobile organic liquid phase; a micro-fluidic chamber including immobilized biorecognition elements that bind to analytes delivered from the mobile organic liquid phase; a mechanism to introduce the mobile organic liquid phase to a buffer containing a plurality of substrates causing a series of biochemical reactions that create a change corresponding to a concentration of the target analyte; and a detector to perform real-time analysis that correlates to a concentration of the organic compounds to determine a presence of the target analyte.

Abstract: A method for reducing the variability, as measured by relative standard deviation (RSD), of an analytical testing technique is provided. This improvement in RSD improves the confidence in the values obtained during field testing. The method includes incorporating a focusing agent into the sampling media, which permits providing sampling media such as thermal desorption tubes preloaded with the focusing agent.

Abstract: A method for reducing the variability, as measured by relative standard deviation (RSD), of an analytical testing technique is provided. This improvement in RSD improves the confidence in the values obtained during field testing. The method includes incorporating a focusing agent into the sampling media, which permits providing sampling media such as thermal desorption tubes preloaded with the focusing agent.

Abstract: A system for solventless calibration of volatile or semi-volatile compounds and methods thereof. The system includes a fluid path having a first end configured to be operably coupled to a fluid source and a second end configured to be operably coupled to the analytical instrument. A solid sorbent is disposed along the fluid path and is configured to absorb an analyte. The flow of fluid along the fluid path from the first end to the second end causes absorbed analyte to be desorbed from the solid sorbent at a desired concentration to the instrument.

Abstract: A computer-implemented method that includes displaying a graphical user interface (“GUI”) and receiving personalized information from at least one server computing device. The GUI includes a page. The personalized information identifies a theatre location, movies playing at the theatre location, dates, and showtimes associated with the movies and dates. The method includes displaying on the page, the movies, dates on which a particular movie is showing, and a particular showtime on a particular date. A selection is entered by the user into a user input displayed on the page. The selection changes the theatre location, the particular movie, the particular date, and/or the particular showtime without the user exiting the page. The page updates automatically to display the user selection. An indication is received that the user has selected a purchase input display on the page, and a purchase of at least one movie ticket is completed.

Abstract: A method for reducing the variability, as measured by relative standard deviation (RSD), of an analytical testing technique is provided. This improvement in RSD improves the confidence in the values obtained during field testing. The method includes incorporating a focusing agent into the sampling media, which permits providing sampling media such as thermal desorption tubes preloaded with the focusing agent.

Abstract: A computer-implemented method that includes displaying a graphical user interface (“GUI”) and receiving personalized information from at least one server computing device. The GUI includes a page. The personalized information identifies a theatre location, movies playing at the theatre location, dates, and showtimes associated with the movies and dates. The method includes displaying on the page, the movies, dates on which a particular movie is showing, and a particular showtime on a particular date. A selection is entered by the user into a user input displayed on the page. The selection changes the theatre location, the particular movie, the particular date, and/or the particular showtime without the user exiting the page. The page updates automatically to display the user selection. An indication is received that the user has selected a purchase input display on the page, and a purchase of at least one movie ticket is completed.

Abstract: A thermal desorption tube for chromatography and mass spectrometry analysis. The thermal desorption tube includes a sorbent and a plurality of focusing agents loaded at known, relative amounts onto the sorbent. Each focusing agent is a compound that chromatographically elutes within a retention time similar to a retention time of a target analyte and has a mass spectrum similar to a mass spectrum of the target analyte. The thermal desorption tube is configured to be further loaded with a sample having the target analyte.

Abstract: A computer-implemented method that includes displaying a graphical user interface (“GUI”) and receiving personalized information from at least one server computing device. The GUI includes a page. The personalized information identifies a theatre location, movies playing at the theatre location, dates, and showtimes associated with the movies and dates. The method includes displaying on the page, the movies, dates on which a particular movie is showing, and a particular showtime on a particular date. A selection is entered by the user into a user input displayed on the page. The selection changes the theatre location, the particular movie, the particular date, and/or the particular showtime without the user exiting the page. The page updates automatically to display the user selection. An indication is received that the user has selected a purchase input display on the page, and a purchase of at least one movie ticket is completed.

Abstract: A method for reducing the variability, as measured by relative standard deviation (RSD), of an analytical testing technique is provided. This improvement in RSD improves the confidence in the values obtained during field testing. The method includes incorporating a focusing agent into the sampling media, which permits providing sampling media such as thermal desorption tubes preloaded with the focusing agent.

Abstract: A non-destructive process for removing chromium from polyvinyl chloride filters is disclosed. The process involves immersing the polyvinyl chloride filters in a concentrated hydrogen peroxide solution at elevated temperatures, followed by rinsing with deionized water. Removing the background concentration of chromium from the filters allows for more accurate measurements of the amount of hexavalent and total chromium present in workplace environments.