AVS 60th International Symposium and Exhibition
    Exhibitor Technology Spotlight Wednesday Sessions
       Session EW-WeL

Paper EW-WeL2
High-Sensitivity, Quadrupole Mass Spectrometry Method for Measuring Water Vapour Transmission Rate (WVTR) of Barrier Membranes to 10-6 g/m2/Day using Deuterium Oxide (D2O)

Wednesday, October 30, 2013, 12:20 pm, Room Hall A

Session: Exhibitor Technology Spotlight V
Presenter: S. Swann, VGScienta Ltd., UK
Authors: S. Swann, VGScienta Ltd., UK
M.P. Dobson, VGScienta Ltd., UK
N. Singh, VGScienta Ltd., UK
Correspondent: Click to Email
We present a vacuum-enabled measurement technique and equipment utilising mass spectrometry and deuterium oxide combined with a novel calibration method, enabling traceability to national standards. This method incorporated in the VacuTRANTM instrument allows measurements to 10-6 g/m2/day WVTR and the ability to measure multiple species simultaneously. The sensitivity of the UHV system with respect to residual gases and D2O proton-exchange reactions are discussed.