For sale is a pack of three source filaments for Micromass/Waters mass spectrometers with EI sources (Autospec series, GCT, Quattro Micro, etc).

Stock availability dependent on sales volume. Can take two weeks to manufacture. 

Waters part number S100683BC0. 

These are new in box and can be sold individually (please inquire).

Expedited and international shipping also available, please ask before purchasing.