Abstract: A chromatography device for separating sample fluids from carrier fluids and analyzing the sample is configured so that it is a modular unit. This modularity enables repairs to be quickly effected on the unit and also greatly simplifies the task of accessing the components of the chromatography cartridge. The modular chromatography cartridge is comprised of separation columns for separating the sample fluid from the carrier fluid. The cartridge additionally includes detectors for detecting distinguishing characteristics of fluids exiting the column. Further, the cartridge preferably includes valve assemblies for directing the flow of the carrier fluid and sample fluid throughout the cartridge and restrictors for adjusting the flow rate of the fluids as they flow through the cartridge. All of the components of the cartridge are configured upon a manifold. The manifold has a means for attaching the cartridge to fluid sources and support structure. The manifold enables the system to exhibit its modularity.

Abstract: A dual-column, dual-detector gas detector and analyzer employs both a photo-ionization detector and a flame-ionization detector. In a survey mode, samples of ambient air are driven through both detectors, and the outputs of both detectors are used to determine the presence of one or more gasses. In analysis mode, fixed-volume samples of ambient air are driven through two elution columns having different properties. The output of each elution column is fed to one of the detectors. The arrival times of gas peaks at the two detectors are employed to develop two lists of candidate gasses. The lists are cross-checked for the presence of each candidate on both lists. Candidates identified from their presence on both lists are identified. A further check attempts to identify candidates which are identifiable from their presence on one of the lists, and not on the other. Components identified in this way are added to the final list.

Abstract: A combination baseball cap and baseball glove forming an object-catching head covering. A mitt is attached to the crown of the cap preferably above the brim. The mitt can be in the shape of a rectangle, mitten or glove and fabricated from the same material used in making the cap, or from elastic material. An opening along the edge of the mitt is provided above the brim. The opening and the mitt are sized to allow the user to insert one hand into the opening to be held between the mitt and the crown. An elastic band may be attached to the mitt along the edge of the opening to aid in holding the cap in place on the hand. A logo can be place on the outside of the mitt. Padding may be used to further protect the user's hand while catching objects. The padding can be a flat sheet of energy absorbing material or may be shaped to approximate the function of a baseball glove.