Abstract: A gamma-sterilizable nutrient medium based on casein soya peptone agar for the detection of microorganisms in hydrogen peroxide-bearing air or on hydrogen peroxide-bearing surfaces, with a content of between 2 and 10% by weight of sodium thioglycolate, between 5 and 20% by weight of sodium thiosulfate and between 10 and 30% by weight of sodium disulfite in each case with respect to the agar. Preferably the agar used is microbial content test agar and the nutrient medium may contain between 0.1 and 0.25% by weight of sodium pyruvate with respect to the agar. If bromocresol purple and bromocresol violet are used as pH-indicators the nutrient medium may also contain polyvinylpyrrolidone.

Abstract: An industrial truck has a vehicle frame (1) with a frame portion (2) having a lateral frame opening (2b) for receiving a battery block. A door (3) covers the frame opening (2b) and may be pivoted outwardly about a substantially vertical axis of rotation (A1). To allow the door (3) to be opened approximately 180°, the door (3) is connected to the vehicle frame (1) by a double hinge (5). A second axis of rotation (A2) is set apart and parallel to the first axis of rotation (A1) and is alterable in its position when the door (3) pivots about the first axis of rotation (A1). A device for obstructing a rotational motion of the door (3) about the second axis of rotation (A2) can be provided, which device can be active in the pivoting range between the closed position and an open position that is approximately at right angles.

Abstract: Gamma sterilizable culture medium for the selectively identification of yeasts and fungi with an addition of ciprofloxacin and, if necessary streptomycin or other antibiotics.

Abstract: An industrial truck has a vehicle frame (1) with a frame portion (2) having a lateral frame opening (2b) for receiving a battery block. A door (3) covers the frame opening (2b) and may be pivoted outwardly about a substantially vertical axis of rotation (A1). To allow the door (3) to be opened approximately 180°, the door (3) is connected to the vehicle frame (1) by a double hinge (5). A second axis of rotation (A2) is set apart and parallel to the first axis of rotation (A1) and is alterable in its position when the door (3) pivots about the first axis of rotation (A1). A device for obstructing a rotational motion of the door (3) about the second axis of rotation (A2) can be provided, which device can be active in the pivoting range between the closed position and an open position that is approximately at right angles.

Abstract: A gamma-sterilisable nutrient medium based on casein soya peptone agar for the detection of microorganisms in hydrogen peroxide-bearing air or on hydrogen peroxide-bearing surfaces, with a content of between 2 and 10% by weight of sodium thioglycolate, between 5 and 20% by weight of sodium thiosulfate and between 10 and 30% by weight of sodium disulfite in each case with respect to the agar. Preferably the agar used is microbial content test agar and the nutrient medium may contain between 0.1 and 0.25% by weight of sodium pyruvate with respect to the agar. If bromocresol purple and bromocresol violet are used as pH-indicators the nutrient medium may also contain polyvinylpyrrolidone.

Abstract: The present invention relates to a method for improving the growth and detection of bacteria, yeasts, fungi or cocci, by adding sterile-filtered yeast extract and/or p-iodonitrotetrazolium violet to the culture medium.

Abstract: Gamma sterilizable culture medium for the selectively identification of yeasts and fungi with an addition of ciprofloxacin and, if necessary streptomycin or other antibiotics.

Abstract: A method of cleaning surfaces made of glass, graphite, ceramics, polymeric and metallic materials, synthetic and vegetable fibres, e.g. fabrics, textiles or waste paper, in particular membrane surfaces, by detaching or dissolving organic and inorganic soilings by a simple flushing operation, where a solution of an iminocarboxylic acid, a polyamino acid, an emulsifier or a mixture thereof is used.

Abstract: A method of visually demonstrating the growth of such microorganisms as fungi, yeasts, and bacteria, especially mycobacteria, identifying them, and testing them for sensitivity to antibiotics by the color change of a specific redox indicator system. A mixture of the redox indicators Methylene Blue and resazurin is added to the culture medium. Iron(III) salts mixed with K.sub.3 Fe(CN).sub.6, Iron(II) salts mixed with K.sub.4 Fe(CN).sub.6, or sodium tungstate (Na.sub.2 WO.sub.4) is added to the culture medium.

Abstract: The invention concerns a method of detecting proteins, especially HIV and CMV antibodies in body fluids using solid-phase immune reaction with a buffer containing an animal serum and/or a non-ionic surfactant in a phosphate or carbonate buffer together with further additives selected from inorganic salts, water-soluble polymers, organic compounds, and propionic acid and their derivatives and mixtures. The buffer makes it possible to reliably eliminate false positive results.

Abstract: An electromechanical scale wherein the platform transmits a load to lateral surfaces at one end of the carrier of a strain gauge and the other end of the carrier is affixed to the base of the scale. This contributes to a reduction of overall height of the scale. The carrier has a median portion with a web in the central symmetry plane of the carrier, and such web supports one or more strip-shaped resistors or semiconductors of the strain gauge. The ends of the carrier can be permanently or separably connected to the platform and/or to the base.

Abstract: A blood-culture flask with an integrated subculture. It comprises a flask proper that can be filled with a liquid nutrient solution and has a neck with an outside thread, a support that can be coated with a solid culture medium, a resilient stopper with an edge that projects at one end, and a screw cap. The screw cap consists of a bottom that is open above and below and has an inside thread and of a top that is open below. The inside thread is dimensioned so that it can be screwed down over the outside thread on the neck of the flask so that the upper edge of the thread is below the upper edge of the neck when screwed on. The resilient stopper is positioned inside the bottom of the screw cap so that the bottom surface of its resilient projecting edge comes to rest against the offset above the thread when not screwed on and its lower section is dimensioned so that it can be introduced tight into the neck of the flask.

Abstract: New hydroxy-succinimide ester compounds of the formula ##STR1## wherein X is selected from a carboxy-succinimide ester group and radicals of the general formulae: ##STR2## A is -O-CH.sub.2 -CH.sub.2 when n is 2 and X is a succinimide ester group but otherwise is a single bond;n is a whole number of from 2 to 7;m is 1, 2, 3 or 4,R is hydrogen, methyl, or cyanide; andR' is methyl or ethyl.have been found outstandingly useful as bridge-building compounds for linking proteins, especially biologically active proteins, to solid or liquid carrier matrix materials, thereby yielding valuable carrier-bound enzymatically active protein compositions.

Abstract: Biologically active protein compositions comprising protein or a protein substrate bound onto a polyamide of the general formula: ##STR1## in which R and R.sub.1, which may be the same or different, are polyamide residues bound onto the amido group,R.sub.2 is the residue of a compound which can be condensed with formaldehyde and which contains at least one further reactive group,R.sub.3 is the residue of a bi- or poly-functional protein reagent,n is 0 or 1, andP is a biologically active protein;these compositions are obtainable by the reaction of a polyamides with amounts, equimolar to one another, of formaldehyde and of a compound condensable with formaldehyde, in a solvent for polyamides, reacting the product thereby obtained with a bi- or poly-functional protein reagent and coupling the resulting reaction product with the biologically active protein or protein substrate.

Abstract: New hydroxy-succinimide ester compounds of the formula ##STR1## wherein X is selected from a carboxy-succinimide ester group and radicals of the general formulae: ##STR2## A is --O--CH.sub.2 --CH.sub.2 when n is 2 and X is a succinimide ester group but otherwise is a single bond;N is a whole number of from 2 to 7;M is 1, 2, 3 or 4,R is hydrogen, methyl, or cyanide; andR' is methyl or ethyl;Have been found outstandingly useful as bridge-building compounds for linking proteins, especially biologically active proteins, to solid or liquid carrier matrix materials, thereby yielding valuable carrier-bound enzymatically active protein compositions.

Abstract: Biologically active proteins are immobilized onto a carrier by reacting a compound containing at least two secondary amino groups at a temperature of from -80.degree. to +50.degree. C with a chlorination agent with the conversion of the secondary amino groups into iminochloride groups of the formula ##STR1## in which R and R.sub.1, which can be the same or different, are aliphatic, aromatic or aliphatic-aromatic radicals, and reacting the carrier material product thus obtained(a) directly with a biologically-active protein, in an aqueous solvent, or(b) with a bifunctional compound containing at least one primary amino group, optionally in an aqueous or organic solvent, and reacting the product thereby obtained containing groups of the formula ##STR2## in which R.sub.2 is an alkylene radical, an .alpha.,.omega.