%0 Journal Article %T Silicone tube humidity generator %+ National Institute of Standards and Technology [Gaithersburg] (NIST) %+ Laboratoire commun de métrologie LNE-CNAM (LCM) %+ LNE CETIAT %A Berg, Robert %A Chiodo, Nicola %A Georgin, Eric %< avec comité de lecture %@ 1867-1381 %J Atmospheric Measurement Techniques %I European Geosciences Union %V 15 %N 3 %P 819-832 %8 2022 %D 2022 %R 10.5194/amt-15-819-2022 %K Metrology %K humidity %K silicone %K humidity generator %K permeation %Z Physics [physics]Journal articles %X Abstract. We describe the model and construction of a two-flow (or divided-flow) humidity generator, developed at LNE-Cnam, that uses mass flow controllers to mix a stream of dry gas with a stream of humid gas saturated at 28 ∘C. It can generate a wide range of humidity, with mole fractions in the range of 0.7×10-6