Abstract: The subject matter of the present invention relates to a method of producing crystals of materials for use in the electronic industry. The method provides for growing a crystal from a liquid phase in apparatus for monocrystallization with the use of additional apparatus situated inside a chamber for monocrystallization. The additional apparatus includes inter-chamber manipulators (6) and (7), which aid in carrying out in one crystallization process the multiplication thereof by the use of more than one or many crystal seeds placed in the monocrystallization chamber, whereby a change in the location of seeds (4) and or (9) and or (11) is effected by the manipulators (6) and or (7) controlled from outside of the pressure chamber (1) and by utilization of catches (14) installed inside the pressure chamber (1).

Abstract: An apparatus for forming a blood droplet of a controlled, generally uniform size from a finger which has been pricked to draw blood includes a "funnel" member providing an upper edge across which the finger is drawn to deposit blood on a surface down which the blood flows under the influence of gravity to a lower edge terminating at a point. The blood flows toward the point, forms into the droplet at the point, and, owing to gravity and the surface tension of the blood, forms into the substantially uniformly sized droplet which falls onto a test strip positioned beneath the point.

Abstract: Method for measuring the coagulation time of a blood sample in which a sample-reagent mixture is formed by introducing the sample and at least one reagent into a cuvette.To reduce the operating and material costs, the sample-reagent mixture is so moved in a stationary cuvette that the mixture flows back and forth around an edge projecting into the cuvette, whereby a clot forms on this edge.

Abstract: A process for sampling and diluting a liquid to be diluted utilizing a device comprising a hollow tubular body and a sealed pre-evacuated container. The hollow tubular body includes a self-filling tube for drawing up and capturing by capillary attraction a predetermined volume of a liquid to be diluted. Additionally, the hollow tubular body includes a connecting tube in an air-tight sealing relationship with the self-filling tube. In a preferred embodiment, the container has a frangible tip for mutually interengaging in an air-tight sealing relationship with the connecting tube.

Abstract: A test composition, device and method for determining a perioxidatively active substance in a test sample, as well as a method for preparing and using the device, are disclosed. The composition comprises an organic hydroperoxide, a benzidine indicator capable of providing a detectable response in the presence of the organic hydroperoxide and a peroxidatively active substance, and, as a stabilizing agent, an aniline chosen from pheny-1-naphthylamine, N,N-dimethylaniline and mixtures thereof. The device comprises a carrier matrix incorporated with the composition, and the method for using the device comprises contacting a test sample with the device and observing a detectable response therein. A method for preparing the device comprises preparing two or more solutions of the ingredients of the composition, wetting the carrier matrix sequentially therewith and drying the matrix after each wetting.