A new, user-friendly, multifunctional PC program - 'AQCS' for evaluation of interlaboratory comparison (IC) results has been elaborated. It enables fast reduction and interpretation of large IC data sets and via its input/output cooperates with known statistical/graphical packages. As such it may successfully serve for IC organizers - groups engaged in certification and production of certified reference materials (CRMs).
Main functions, advantages and limitations, options and features of the AQCS program have been described, ilustrated and discussed. Taking into account the present state of the elaborated program and its conceivable use in the future, conclusions concerning its possible further extention and development have been drawn.