A novel dilution pump system used in Biosystem’s Cannonball3 confined space gas detector, which was recently awarded a patent, generates more accurate combustible gas readings in low-oxygen spaces. The Cannonball3 detects oxygen deficiencies, flammable gases and vapors, and several toxic gases, featuring a scratch-resistant screen, multi-sided visual alarm, and one-button operation. Biosystems, Bacou-Dalloz, Inc., Smithfield, RI.