Various parameters affect measurements of the vacuum foil hydrogen permeation method. This paper explores the measurement of total hydrogen quantity and the effect of various parameters such as capillary
length, presence of surplus hydrogen, effects of various solutions with poisons and response times. These parameter studies help to provide a more complete picture of understanding of the effects of different
variables on this relatively new direct hydrogen permeation measurement technique. Keywords: hydrogen permeation, hydrogen quantity, hydrogen measurement, permeation rates, vacuum decay, corrosion, upset response, vacuum foil.