Abstract: A system for providing standard mixtures of volatile and semi-volatile organic compounds for simultaneous GC and MS calibration in a calibration vial, wherein calibration mixtures are prepared by diluting calibration analytes in granular PDMS such that most of the analytes are in the PDMS phase and the sample can then be taken from the analytes in the headspace vapor in the calibration vial, wherein a reliable calibration sample can be taken from the calibration vial because the analytes in the PDMS phase and the headspace vapor are in thermodynamic equilibrium, and wherein the method provides solvent-less sampling, long-time stability, ease of use, is quantifiable, and related to temperature.

Abstract: A system for providing standard mixtures of volatile and semi-volatile organic compounds for simultaneous CC and MS calibration in a calibration vial, wherein calibration mixtures are prepared by diluting calibration analytes in granular PDMS such that most of the analytes are in the PDMS phase and the sample can then be taken from the analytes in the headspace vapor in the calibration vial, wherein a reliable calibration sample can be taken from the calibration vial because the analytes in the PDMS phase and the headspace vapor are in thermodynamic equilibrium, and wherein the method provides solvent-less sampling, long-time stability, ease of use, is quantifiable, and related to temperature.

Abstract: A syringe-like device (hereinafter “syringe”) that is operable by a single hand, wherein the syringe includes a plunger for ejecting and then retracting a fiber or filament used for the collection of solids, solids in suspensions and liquids, wherein the syringe includes a microchip embedded in the syringe housing, and wherein the microchip enables electronic chain of custody tracking of a sample from a point of origin through final analysis.