Kulzer & Co. Gmbh

Lutz Gwinner

Steffen Oppawsky

Helmut Rohrig

Ulrich Salz

Wolfgang Beins

The irradiation apparatus for the photopolymerization of plastic embedding masses for histological preparations has a preparation support located in a housing and a plurality of irradiation lamps, with one lamp above and one lamp below the preparation support forming one lamp pair. In order to cure photopolymerizable embedding masses in a manner that does not harm the embedded preparations or specimens, and in particular to avoid an abrupt rise in the reaction heat, and so that a small number of irradiation lamps is sufficient, the preparation support is a rotary support plate having a plurality of light pervious preparation holding means located about its outer circumference, and the lamps are positioned such that in operation, the holding means sequentially pass in between the lamps of each lamp pair, and the centers of the holding means are located on a circle that is concentric with the axis of rotation of the support plate.

Photopolymerization irradiation apparatus

A mold for embedding histological specimens made of transparent plastic of the kind that is hardenable by irradiation, usually with light, consists of at least one flat-bottomed oval basin depressed with respect to a surrounding surface which, in turn, is externally bounded by a peripheral channel. The containing walls of the basin are outwardly inclined from the vertical. A separating layer covers the entire upper surfaces of the mold, including those of the peripheral channel, and consists of a synthetic resin, such as polyethylene, which does not bond with the resin of the embedding material and can be applied to the sheet of acrylic resin or polyvinyl chloride before the latter is pressed into the shape of the mold. The specimen embedded in the hardened embedding resin can be easily expelled from the mold even if the mold is made from another resin to which the separation layer might bond.

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Mainz, Germany

Lutz Gwinner