Abstract: Biological material is detected in a sample using a MALDI-MS technique (Matrix Assisted Laser Desorption and Ionization-Mass Spectroscopy). A liquid comprising the sample and a MALDI matrix material is prepared and used to form a continuous stream of the liquid. The stream is separated into successive parts to form drops, which are launched into flight, or the stream is launched into flight and then separated into drops. Drop forming techniques may be used that are known from ink jet printers. Material from the drops is ionized while in flight. Mass spectra from the ionized material of respective drops are measured. Preferably, before the drops are formed the liquid is diluted to a level where the majority of drops at most one micro-organism is present per drop.

Abstract: The present invention relates to a new method for classification of spectral data comprising: a. analyzing at least two samples belonging to at least one cluster through recording of a spectrum; b. for each spectrum determining the peaks and the spectral value at which they occur; c. calculating the probability (p) of occurrence for each peak for every cluster and from this the odds ratio p/(1?p) for each peak; d. preparing a spectrum from a sample to be classified with the same technique as in step a); e. determine the peaks in the spectrum obtained in step d); f. calculate the likelihood of identity for each cluster by multiplying per cluster the odds ratio in said cluster for each peak found in the spectrum of step d); and g. assign the sample tested in step d) to the cluster that provides the largest number as a result of step f). The invention also comprises a system for performing such a method and the use of such a system for classification of spectral data.

Abstract: Biological material is detected in a sample using a MALDI-MS technique (Matrix Assisted Laser Desorption and Ionization-Mass Spectroscopy). A liquid comprising the sample and a MALDI matrix material is prepared and used to form a continuous stream of the liquid. The stream is separated into successive parts to form drops, which are launched into flight, or the stream is launched into flight and then separated into drops. Drop forming techniques may be used that are known from ink jet printers. Material from the drops is ionized while in flight. Mass spectra from the ionized material of respective drops are measured. Preferably, before the drops are formed the liquid is diluted to a level where the majority of drops at most one micro-organism is present per drop.

Abstract: A ground run up enclosure (10) which comprises an air inlet structure (12), a test chamber (14), an acoustic enclosure (16) and a main enclosure door (118). The air inlet structure (12) is adapted to receive ambient air and redirect it into the test chamber (14). The test chamber (14) is designed to receive a portion of an aircraft (20) therein. The acoustic enclosure (16) receives the airflow from the test chamber (14). The airflow continues through the acoustic enclosure (14) until it contacts a front surface of the main enclosure door (118) and is redirected upward and out of the enclosure.

Abstract: A ground run up enclosure (10) which comprises an air inlet structure (12), a test chamber (14), an acoustic enclosure (16) and a main enclosure door (118). The air inlet structure (12) is adapted to receive ambient air and redirect it into the test chamber (14). The test chamber (14) is designed to receive a portion of an aircraft (20) therein. The acoustic enclosure (16) receives the airflow from the test chamber (14). The airflow continues through the acoustic enclosure (14) until it contacts a front surface of the main enclosure door (118) and is redirected upward and out of the enclosure.