Abstract: Pre-coated microscope slides are produced on a large scale by spraying a dyestuff solution on to microscope slides which are passed at a constant speed under a spray nozzle, the pattern of which is kept rectangular by means of a mask. Apparatus for carrying out the process includes a conveyor belt, a regulatable spraying device positioned above the conveyor belt and a mask positioned between the spraying device and the conveyor belt.

Abstract: Pre-coated microscope slides are produced on a large scale by spraying a dyestuff solution on to microscope slides which are passed at a constant speed under a spray nozzle, the pattern of which is kept rectangular by means of a mask.

Abstract: Liquid varnish coating compositions having a low or nil solvent content, comprising a mixture of binders and optionally conventional auxiliary agents, which contain, as the binder, a mixture of:A) glycidyl esters produced in the usual manner by the reaction of esterification products containing carboxyl groups with an excess of a 2,3-epoxyhaloalkane in the presence of reactive agents which split off hydrogen halide; andB) one or more cyclic anhydrides of saturated and/or unsaturated aliphatic and/or cycloaliphatic dicarboxylic acids, or mixtures consisting essentially of carboxylic acid anhydrides of saturated and/or unsaturated aliphatic and/or cycloaliphatic and aromatic dicarboxylic acids, wherein the melting point of the anhydride or anhydride mixture is below 100.degree. C.,in such an amount that 0.7-1.5 anhydride equivalents are present for one epoxide equivalent of the glycidyl esters.

Abstract: Liquid varnish coating compositions having a low or nil solvent content, comprising a mixture of binders and optionally conventional auxiliary agents, which contain, as the binder, a mixture of:(A) glycidyl esters produced in the usual manner by the reaction of esterification products containing carboxyl groups with an excess of a 2,3-epoxyhaloalkane in the presence of reactive agents which split off hydrogen halide; and(B) one or more cyclic carboxylic acid anhydrides of saturated and/or unsaturated aliphatic and/or cycloaliphatic dicarboxylic acids or mixtures consisting essentially of carboxylic acid anhydrides of saturated and/or unsaturated aliphatic and/or cycloaliphatic and aromatic dicarboxylic acids, wherein the melting point of the anhydride or anhydride mixture and changes is below 100.degree. C., in such an amount that 0.7-1.5 anhydride equivalents are present for one epoxide equivalent of the glycidyl esters.

Abstract: Liquid varnish coating compositions having a low or nil solvent content, comprising a mixture of binders and optionally conventional auxiliary agents, which contain, as the binder, a mixture of:A) glycidyl esters produced in the usual manner by the reaction of esterification products containing carboxyl groups with an excess of a 2,3-epoxyhaloalkane in the presence of reactive agents which split off hydrogen halide; andB) one or more polyamines with at least 3 active hydrogen atoms linked to nitrogen atoms, wherein the nitrogen atoms are bound to aliphatic and/or cycloaliphatic residues which, in turn, can optionally be bound to an aromatic residue,In such an amount that 0.8-1.5 amino hydrogen equivalents are present for one epoxide equivalent of the glycidyl esters.

Abstract: Microscope slide for blood investigation having a coating of highly purified methylene blue N and highly purified cresyl violet acetate in a weight ratio of from 1:1.5 to 1:5.