Abstract: The article (10) comprises a central region (12) with a recessed rim (32) comprising a peripheral flat portion (14) onto which the film (40) is heat-sealed. The film used is a cold-drawable plastic film, and the process comprises in particular a step of peripheral holding and axial displacement of the film relative to the part, beyond the central region, by drawing the film in the region of the rim without any substantial external application of heat. The film is thus cold-formed to give it a concave shape with zones (42-48) associated with the central region (12) and the rim (32) of the article. The film is then held in contact with the flat portion, the whole being heated simultaneously to effect the heat-sealing.

Abstract: In an analytic spectrometer (50) having a central computer (9), permanently installed and exchangeable components (5), such as a radiation source, a detector, a beam splitter, a filter, external measurement probes and the like, each of which exhibiting a readable data carrier (7) with encoded data of parameters characterizing the respective component (5), the data media (7) can be written to and contains changeable time dependent data concerning the history and/or the actual properties of the corresponding component (5) for example length of operation, performance deterioration parameters or calibration curves of the component (5). These data can be continuously adjusted by the central computer (9) to the current state of the component (5) so that the data medium (7) connected to the component (5) can immediately supply information concerning the current actual properties of the component (5) when installing the component (5) in another spectrometer.