Abstract: The present invention as described herein provides a means to remove water vapor, entrained condensable liquids, and entrained condensable solids from an environmental fluid sample to prepare the vapor and/or condensate fractions of such fluid sample for chemical analyses. It substantially reduces equipment breakage risk from the fragile equipment required to be used in the current art, reduces differential pressure across the sample preparation system, avoids changes in chemical composition of the vapor and liquid samples while allowing direct analysis of the condensate stream or streams, allows for operation in a wider sample stream vacuum or pressure ranges, and reduces required maintenance downtime.