Ion gauge tube for various Thermo mass spectrometers, including LCQ Advantage, LCQ Advantage Max, Quantum Access, Quantum Access Max, Quantum Ultra AM, Quantum Discovery, Quantum Ultra ER,  Quantum Ultra, Vantage Ultra

Equivalent to Thermo part number 00105-01525

MKS part number 342003. Brand new, sealed, unopened. Free domestic shipping.