SAMPLE COLLECTOR AND ANALYSER

摘要

There is described a sample collector and analyser for collecting gaseously borne samples. A collector is described using a plunger system or a hemispherical arrangement, each with projections to concentrate the sample towards the sample analysis area. A sample collector with improved tube geometry is presented to collect and distribute the sample across a wide proportion of the sample analysis area and/or across a centrally positioned sample analysis area. A fluid delivery system for adding reagents or similar fluids to the samples collected by any of the collectors is also described. An optical system for the analysis of a sample, in particular but not exclusively to sample collection apparatus for collecting biological samples for analysis using evanescent waves is also described. Particularly, there are described a refractive micro-lens array and/or micro-diffraction grating and/or array of micro-optical components.