The Jerome J605 from AMETEK Arizona Instrument is designed to detect hydrogen sulfide at concentrations as low as 3 ppb with a resolution of 20 ppt. It has a survey mode that allows the user to continuously draw in samples of air in order to sweep an area for hydrogen sulfide hot spots or leaks so corrective action can be taken. Its wide detection range makes it useful for multiple applications, including regulatory compliance and odor control at wastewater and landfill facilities, scrubber efficiency testing, and monitoring corrosion in control rooms. 602-529-3723; www.azic.com.