ONTARIO, Calif.--(BUSINESS WIRE)--DPS Instruments, Inc., manufacturer of the world’s only modular laboratory and portable Gas Chromatograph systems, announced that its new Network versions of the Series 600 Laboratory GC (www.dps-instruments.com/dps600flyer.pdf) and the Companion portable GCs (www.dps-instruments.com/dps_companion_specs.pdf), will be introduced at Pittcon 2009, the North American Scientific Instrument trade show, March 8-13 in Chicago, Illinois.