US 11,988,652 B2
Packed tip electrospray emitter
Joshua A. Silveira, San Jose, CA (US); Dale Lindseth, San Jose, CA (US); Gary A. Schultz, Ithaca, NY (US); Eloy R. Wouters, San Jose, CA (US); Michael L. Poltash, Fremont, CA (US); and Brandon Howard Robson, San Jose, CA (US)
Assigned to Thermo Finnigan LLC, San Jose, CA (US)
Filed by Thermo Finnigan LLC, San Jose, CA (US)
Filed on Nov. 18, 2020, as Appl. No. 16/951,909.
Prior Publication US 2022/0155267 A1, May 19, 2022
Int. Cl. G01N 30/72 (2006.01); G01N 30/14 (2006.01); G01N 30/60 (2006.01); G01N 33/68 (2006.01); H01J 49/00 (2006.01); H01J 49/04 (2006.01); H01J 49/16 (2006.01); G01N 30/02 (2006.01); G01N 30/04 (2006.01)
CPC G01N 30/7233 (2013.01) [G01N 30/14 (2013.01); G01N 30/60 (2013.01); G01N 33/6848 (2013.01); H01J 49/0031 (2013.01); H01J 49/004 (2013.01); H01J 49/0436 (2013.01); H01J 49/165 (2013.01); G01N 2030/027 (2013.01)] 30 Claims
OG exemplary drawing
 
1. An apparatus for analyzing a sample with a mass spectrometer, comprising:
an electrospray ionization (ESI) emitter having first particles disposed within;
a junction coupled with the emitter; and
a liquid chromatography (LC) column coupled with the junction, the LC column having second particles disposed within, the first particles and the second particles being different types of particles, and wherein the first particles are more electrically conductive than the second particles.