Hazardous gases such as chlorine, fluorine, ammonia and sulfur dioxide are required for certain important industrial and municipal processes. Occasionally accidents occur which results in released of these toxic chemicals. PureAir’s Sentry ™ system stands on guard to protect against these releases. Systems are designed to capture the worst case scenario release of these gases. Customers can make great improvements to their EPA Risk Management Plan (RPM) by installing a PureAir Sentry. Many sizes and configurations are available.