Designed to detect hydrogen sulfide at concentrations as low as 3 parts per billion with a resolution of 20 parts per trillion, the Jerome J605 low-level, portable H2S monitor from Arizona Instrument 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 and enable corrective action to 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. 800/528-4711; www.azic.com.