Profile: Billups-Rothenberg, Inc. manufactures & sells hypoxia, hyperoxia, CO2 incubators, modular incubator chambers & hot box systems for IVF in vitro fertilization and stem cell & tissue culture. We offer single flow meter (SFM 3001) for controlling the gas flow of premixed gases, and dual flow meter (DFM 3002) to mix gases in addition to controlling the gas flow rate. Our Dual Flow Meter (DFM 3002) is often used in experiments requiring fine tuning of O2 and or CO2 concentrations to determine the effect of different gas mixtures. We also offer hot box system that eliminates the hazard of contamination of personnel & equipment by radioactive gases and accessories like chimneys, exhaust & static hot filter.