The determination of residual coatings solvents and other volatiles in ultrathin (1 micron) polymeric films is discussed in terms of film dissolution by a carrier liquid followed by GC. Four factors which affect sensitivity are discussed. These are concentration of volatiles in the carrier liquid, amount of liquid injected and analysed, GC detector performance, and impurity level of the carrier liquid. A sample calibration curve for toluene in a 1-2 micron styrene copolymer is described and discussed. -- AATA