PSA stands for Pressure Swing Absorption and is ideal for projects that require a great deal of nitrogen which must be supplied at high pressure. This involves cool houses with many (>20) cool cells or cool houses in which oxygen removal takes place in multiple cells simultaneously. This concerns volumes greater than 85 m3 h-1. A PSA is suitable for making very pure nitrogen. We supply PSAs with a residual oxygen value of <0.1% and volumes up to 1,200 m3 h-1.