The G450 Gas Detector from GfG Instrumentation offers exceptional performance for an extremely affordable price. The H2S sensor offers 0.1 ppm resolution to comply with the latest TLV requirements. G450 sensors are warranted for three full years, ensuring that the G450 has the lowest cost-of-ownership of any confinedproductsspace gas detector on the market today, the manufacturer says. GfG Instrumentation,, (800) 959-0329.  Booth 2246. Circle 318