Waters 700011946 GC MS LID ASSEMBLY w/ MicroPirani Transducer 925-81080Waters 700011946 GC MS LID ASSEMBLY w MicroPirani Transducer 925 81080 The Waters 700011946 GC MS Lid Assembly is a precision laboratory assembly designed for gas chromatography and mass spectrometry systems. Integrated with a MicroPirani vacuum transducer model 925 81080, this assembly provides accurate vacuum monitoring and stable system operation for analytical instrumentation environments. Engineered for compatibility with Waters GC MS platforms,