Buchi Labortechnik Ag

Marco Sanwald

Arthur Spring

Erwin Bossart

Stefan Hungerbuhler

Richard Widmer

The connection element (,) is preferably provided with two retaining collars (,) which enclose the connection sections (,) which do the holding together. The retaining collars are releasably connected to one another or held against one another by way of fastening elements, preferably screw bolts (,). Each retaining collar consists of at least two segments (,). With this the fastening elements have additionally also still the function of holding together the two segments. For releasing the connection at least one of the segments can be pivoted open.

Connection element for connecting neighboring connection sections on tubes and/or container openings, in particular on laboratory apparatus

Extractor (21) has extraction vessel (24) to which reflux line (26) is molded in one piece. Valve (1) which can be opened to allow the extract to flow back from extraction vessel (24) into distillation vessel (22) is sealed into reflux line (26). Valve (1) can be triggered depending on the height of the solvent level in extraction vessel (24).

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Gossau, Switzerland

Marco Sanwald