A chemical reaction is performed with separation of the product and reactant by pressure swing adsorption, using an apparatus having a plurality of adsorbers cooperating with first and second valve assemblies in a PSA module. The first sheet has a plurality of discrete passageways overlying the wound and adapted to communicate negative pressure established by a negative pressure source to the wound. The resist top coat composition contains a polymer as a base resin having a repeating unit p of styrene having a 1,1,1,3,3,3-hexafluoro-2-propanol group shown by the following general formula, a C6-C10 ether compound, and a C7-C12 hydrocarbon compound, and wherein m is 1 or 2, and p is in the range of 0<p\u22661. A clip extends from the drive bracket.