Aroma Offi ce 2D (Gerstel K.K.) is an integrated software approach for simultaneous processing of both retention index (RI) and mass spectral (MS) data for rapid and improved identifi cation of fl avor compounds. The program can be integrated into Agilent Chemstation Software and searches are performed using CAS numbers of candidate compounds after library searching and corresponding automatically generated RI values. When MS signals are too weak to be used the software allows two RI values from orthogonal columns (after GC-O organoleptic evaluation) to be cross searched in the database. This offers a very useful additional identifi cation procedure for fl avor compounds. The searchable database comprises > 10,000 compounds and offers the practicing analyst full results oriented software manipulation of RI and MS data on fl avor compounds.