Porton Diagnostics, Inc.

Other

Porton Products Ltd

Public Health Lab. Service Bd

John R North

Robert L Kay

Jonathan Ivy

Neil D Plotkin

Craig G Sawyers

Michael J Kearns

Jeff Brown

Mark Eike

Satham Petty-Saphon

Ian J McEntee

Stephen Owen

Stefan Nowinski

A diagnostic electrode actively generates test signals to be supplied to analyzer circuitry. The electrode emulates a disposable sensor associated with the analyzer during a normal mode of normal operation. The diagnostic device generates predetermined signals for an output interface of the device using a power supply disposed within the device. The diagnostic module can be designed to produce voltage signals, current signals, or light signals to be received by the analyzer, depending on the type of analyzer to which the diagnostic electrode is to be associated.

Diagnostic electrode for evaluating circuitry of an analyzer

Diagnostic electrode

A system for analyzing the ion level of a fluid sample including an analyzer instrument, containing electrical circuitry for analyzing the ion level of the fluid sample, in electrical communication with a sensor unit having an ion selective electrode in communication with the fluid sample and electrical contacts for communication with the analyzer instrument. A recharger unit for the analyzer instrument is also disclosed.

System for analyzing ion levels in fluids

Production of plasminogen activator from cells to which lectin is added

Assay technique and equipment

A cassette for holding a tissue specimen comprises a body portion (10) and a separable portion (12) which snap together to enclose a specimen (42) in a mould space (54) of the cassette. The specimen (42) is located and oriented in the mould space (54) between a compliant base portion (14) and the separable portion (12). The specimen is processed by the successive application of processing fluids before being embedded in paraffin wax. The specimen is held in its oriented position on the cassette during processing and embedding, there being no handling or re-positioning of the specimen between processing and embedding. During embedding, molten wax is supplied to a container (56) in which the cassette is placed. Wax surrounds and embeds the specimen, the container base is then cooled to solidify a base layer of wax, allowing the remaining wax to be drained from the container, leaving the wax within the cassette to solidify and cool. After removal of the cassette from the container, portions of the cassette are stripped away to leave the embedded specimen ready for microtome sectioning.

Methods of and apparatus for preparing tissue specimens

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Salisbury, United Kingdom

John R North