The C-21 DRI-GAS Sampling System from Analytical Technology is a solution for monitoring combustible and toxic gases in areas where there are condensing levels of moisture that often result in premature sensor failure. The system draws gas samples from high-humidity vent stacks, ducts, wet wells or other humid locations. It removes water vapor from the gas sample by contact with a cold plate that condenses moisture and delivers a dehumidified gas sample suitable for toxic and combustible gas monitoring equipment. 800/959-0299; www.analyticaltechnology.com.