Chemunex

Jean-Louis Drocourt

Warren Groner

Jaspal Sanghera

Patrick Desfetes

Andrew Cooper

Philippe Cornet

Louis Foissac

Pascal Yvon

Anne-Claire Silvestri

Les Dodd

Jean-Gerard Guillet

A process for trapping and confining microorganisms in air using water-soluble polymers is disclosed. The water-soluble polymers are readily soluble in water or a physiological diluent, have reasonable mechanical strength so that they can be transported without rupture, retain water and adhere to microorganisms. A process for the rapid and sensitive detection of microorganisms in air under aseptic conditions is also disclosed.

Process for trapping and confining microorganisms in air using water-soluble polymers

Filtering system for fluid

Apparatus for rapid, ultra sensitive and automatic counting of flourescent biological cells such as microorganisms, carried by a solid support such as a filter.

Apparatus for rapid and ultrasensitive detection and counting of

Method for the rapid diagnostic of an infection of the urinary tract (UTI), by a specific examination of urine. The method of analyzing a urine specimen, for the rapid and simultaneous counting of both viable bacteria and leucocytes (white blood cells or WBC), consists of:

Method for rapid diagnostic of urinary tract infections

Apparatus and process capable of rapid detection and counting of rarely occuring mammalian cells in blood and other tissues which have been labeled with a fluorescent dye. The process includes: scanning a solid support on which a specimen potentially containing fluorescent cells has been deposited, with an incident beam from a laser, forming a laser spot on the solid support, the laser spot being substantially greater than the cells to be detected, the laser spot size being between 15 and 30 .mu.m; and simultaneously: detecting the resultant fluorescent light at least at one wavelength; establishing a set of correlated-features by a line-to-line correlation of individual features; comparing the correlated-features on each pair of adjacent lines in time synchrony, at least at two different wavelengths .lambda..sub.1 and .lambda..sub.2 ; making a size discrimination of retained events and selecting those having a size corresponding to the type of cells searched; determining if, for retained events after size discrimination, the events energy profile in three dimensions is within predetermined Gaussian shape criteria; and counting the remaining events to determine and to count exclusively the fluorescent cells present on the solid support.

Apparatus and process for the detection and counting of rarely occurring

Process for rapid, ultrasensitive and automatic counting of fluorescent biological cells such as microorganims, carried by a solid support such as a filter. The process includes: scanning a solid support on which a specimen potentially containing microorganisms has been deposited, with an incident beam from a laser, forming a laser spot on the solid support, the laser spot being substantially greater than the microorganisms to be detected, the laser spot size being between 4 and 14 .mu.m and simultaneously: detecting the resultant fluorescent light at least at one wavelength; establishing a set of correlated-features by a line-to-line correlation of individual features; comparing said correlated-features on each pair of adjacent lines in time synchrony, at least at two different wavelengths .lambda..sub.1 and .lambda..sub.2 ; making a size discrimination of retained events and selecting those having a size corresponding to a microorganism; determining if for retained events after size discrimination, the events energy profile in three dimensions is within predetermined Gaussian shape criteria; and counting said remaining events to determine and to count exclusively the microorganisms present on said solid support.

Growing community of inventors

Yerres, France

Jean-Louis Drocourt