mass spectrometer

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mass spectrometer

an analytic instrument for identifying a substance by sorting a stream of charged particles (ions) according to their mass. The sorting is usually accomplished by deflecting a stream of charged particles into a semicircular path as it enters a magnetic field and ultimately strikes a photographic plate or a photomultiplier tube sensor.

mass spectrometer

An instrument that determines the exact mass of charged particles or ions by measuring the flight path through a set of magnetic and electric fields. Mass spectrometers specialised for protein and peptide sequencing are used for high-throughput analysis.
References in periodicals archive ?
The Minis are not as precise as a standard mass spectrometer, but they would be a good first-line defense to indicate when additional testing is necessary.
To make the sample ions enter the mass spectrometer scientists used the technology of electrodynamic ion funnel-a series of conductive, progressively smaller electric ring electrodes that efficiently pull in and focus more ions into the mass spectrometer than without the funnel.
Mass spectrometers generally are designed to operate in controlled environments--with steady temperatures, no vibrations or electronic interference.
Commissioned by Oxford Professor Sir Keith O'Nions from Phil Freedman, a mass spectrometer specialist, the design and construction of the cutting-edge technology led to them co-founding the company.
The instrument consists of a miniature mass spectrometer combined with a technique called desorption electrospray ionization, or DESI.
It's the ideal technique for analyzing the proteins of microorganisms, says Robert Cotter of Johns Hopkins University in Baltimore, who is also collaborating with APL scientists on the miniaturization of mass spectrometers.
When used recently to help develop the company's API 3 mass spectrometer, it helped cut the design cycle from three years to two and lowered material costs by 77 percent.
With the new Thermo Scientific TSQ Altis mass spectrometers, my lab can develop quantitative methods for biotherapeutic proteins and target receptors with extreme sensitivity, selectivity, accuracy and precision, said Dr.
The capabilities of a standard ion trap mass spectrometer have been transferred to a 1-mm portable device.
Bruker Daltonics introduced two new LC/MS mass spectrometers.