Ciba-geigy Corporation

Bruker Analytische Messtechnik Gmbh

Peter E Jordi

Nico Pericles

Peter Datwyler

Ernst Gassmann

Hansueli Buser

Klaus Anton

Aldo Giorgetti

Optical high-pressure transmission cells of the type used, for example, for SFC-FTIR, comprise a pressure-resistant housing part with two intersecting bores, one of them forming a fluid passage and the other one forming a light transmission path. The bore forming the light transmission path is provided with inserted windows. There is a demand in infrared spectroscopy, for supercritical fluid chromatography, for particularly pressure-resistant cells of simple design, which demand has not been satisfied heretofore. In the case of the proposed measuring cell, the windows are designed as stepped windows having central cylindrical neck portions engaging the bore serving as a light transmission path so that the chamber is delimited by end faces of the neck portions. Sealing is effected by O-rings.

Optical high-pressure transmission cell

A micro-flow cell for chromatographic, spectrometric or scintillation measurements comprises a capillary tube, preferably made of glass or silica glass, through which flows the medium to be examined, and a holding device for said capillary tube. The holding device is separably composed of at least two parts which can be separated in their longitudinal direction. The capillary tube is fixed in the holding device by suitably formed connectors so as to be stress-free and tension-free to the greatest possible extent.

Micro-flow cell

A sample charger for a gas chromatograph has a charging chamber constructed for connection to the separating column of the gas chromatograph and receives a sample container in the form of a tube by the lengthwise insertion of a rod-shaped sample holder which comprises a hollow insertion tube, in which the sample container is releasably secured at its forward end. The charging chamber and insertion tube have carrier-gas inlet openings so that the interior of the insertion tube and the sample container can be scavenged with inert gas during the insertion process and, after the sample container has been completely inserted into the charging chamber, the carrier gas flows through the container into the separating column.

Sample charger for a gas chromatograph

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Basel, Switzerland

Peter E Jordi