The apparatus comprises a plurality of stationary cuvettes, a chamber for the fluid to be evaluated, means for placing the chamber in fluid communication with each of the cuvettes and for permitting the flow of fluid from the chamber into each of the cuvettes, a plurality of optical transmitting means in registration with each of the cuvettes for transmitting a beam of radiant energy through each of the cuvettes, and detector means for intercepting each of the beams of radiant energy and for mea...

A biological cell analyzing system which is capable of automatically categorizing unstained biological cells as normal or non-normal. The cells are made to flow through a transparent tube in single file and are scanned with a mixture of ultra-violet and visible light. The cytoplasm and nucleus of each cell absorb ultra-violet radiation to different degrees, and the emergent light signal, as modulated by the scanned cells, is detected, amplified, and extended to a data processor which logically a...

The apparatus comprises a plurality of stationary cuvettes, a chamber for the fluid to be evaluated, means for placing the chamber in fluid communication with each of the cuvettes and for permitting the flow of fluid from the chamber into each of the cuvettes, a plurality of optical transmitting means in registration with each of the cuvettes for transmitting a beam of radiant energy through each of the cuvettes, and detector means for intercepting each of the beams of radiant energy and for mea...

A tissue cassette which includes an open-topped, perforated base member adapted to receive a tissue specimen, a perforated lid member adapted to cover the base member and be secured thereto in a closed position, and one or more gates joining the lid members to the base member in an open position wherein the gates will break when flexed.

There is described a deproteinizing agent comprising a water insoluble crosslinked polycarbonic acid formed by crosslinking a polymeric compound with a diamine. This deproteinizing agent is useful for deproteinizing biological fluids.

Disclosed is a method of screening or identifying a microorganism by providing two microorganism nutrient medium layers in communication with and separated by a sterilizable membrane filter, implanting at least one of the layers with a microorganism, and allowing an effective substance to permeate through the filter to enable microorganism identification.

An apparatus for staining biological slides comprises a support housing; a slide conveyor assembly mounted within the support housing and including a slide support tray for holding a plurality of biological slides; a stain dispensing assembly within the support housing, having a plurality of dispensers adapted to be located above the slide support tray; and a stain removal assembly located within the support housing adjacent the dispensers, and including a fluid drain and a fluid evaporator. The...

An apparatus for analyzing biological liquids comprises a measuring block including measuring means for measuring characteristics of said liquids. The measuring block is mounted within a thermal shield or housing by means of a base member interconnecting a minor part of the inner wall of the housing and the measuring block so as to define a space between the inner walls of the housing and the measuring block, said space being filled with air or another medium having a poor thermal conductivity. ...

Arrangement for the biological cleaning of water, said arrangement being suitable for large urban stations for cleaning sewage or for the cleaning of waste waters of industrial plants. The arrangement comprises an activating system with pneumatic aeration and a separating system communicating therewith, the arrangement operates on the basis of fluid filtration and automatic return of activated sludge into the activating system by gravitation. Suitable partition walls in a large container form a ...

Apparatus for the biological purification of water with the separation of activated sludge by fluid filtration with the spontaneous returning of activated sludge into the activation area or zone, said separation area or zone being arranged above the activation area.