Picarro is a provider of enhanced optical spectroscopy analytical solutions based on patented Cavity Ring-Down Spectroscopy (CRDS). It serves natural gas utilities (methane detection, leak survey, emissions measurement and network intelligence), ethylene oxide monitoring for sterilizers, fenceline monitoring for refineries and chemical plants, scientific analytical instruments for greenhouse gas and isotope research, semiconductor cleanroom AMC monitoring, and pharmaceutical VHP monitoring. Operating for over 25 years, it is ISO 9001 certified and serves customers in about 100 countries.