ANALYTICAL DEVICES PROVIDING MASS SPECTROMETRY

Brand	Owner	Address	Description
G908	908 Devices Inc.	645 Summer Street Boston MA 02210	Analytical devices providing mass spectrometry and gas chromatography analysis for laboratory use;G NINE ZERO EIGHT;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

In some embodiments, a tandem (MS/MS) mass spectrometry method includes selecting a collision-induced dissociation (CID) voltage amplitude and a q-parameter value for a quadrupole ion trap to optimize a daughter ion fragmentation process for a given parent ion mass-to-charge (m/z) ratio. The q and CID voltage values may be selected according to a look-up table and/or using approximate analytical expressions. The correspondence between m/z values and (q, CID) value pairs may be established by pre-measurement calibration. A fragmentation-optimized q value may be computed according to m/z, and a CID voltage value may be determined according to the computed q value. A user may also force q to another value, for example in order to facilitate trapping of a desired daughter ion mass range, and the controller computes a CID voltage value according to the forced q value.