Patent ID: 7998434
Filing Date: 2011-08-16
Classification: G01N,Y10T

Abstract:
1. A mass spectrometer pumping device for supplying a diluted sample to a mass spectrometric analyser, comprising: a first conduit for a sample; a second conduit for a diluent; a third conduit for a diluted sample; a mixer configured to mix the sample from the first conduit with the diluent from the second conduit to form the diluted sample, said mixer being coupled to the first conduit and the second conduit such that the sample enters the mixer through the first conduit at a first flow rate and the diluent enters the mixer through the second conduit at a second flow rate, the mixer being coupled to the third conduit and configured so that said diluted sample exits the mixer into the third conduit at a third flow rate, said third flow rate being substantially equal to the sum of the first and second flow rates; pump means for pumping fluid through the mixer and the third conduit, the pump means comprising: