This method is used to determine the concentration of
didecyldimethylammonium chloride (DDAC) and
alkyldimethylbenzylammonium chloride (BAC) in treated
wood. The method is not compound specific; the total
equivalence of cationic surfactants is determined. This
procedure is intended for routine quality control in wood
treatment and is not suitable for determination of trace levels
of quaternary ammonium compounds in wood.