Our $10m award for the USDA Climate Smart Partnerships project requires greenhouse gas (GHG) quantification, monitoring and verification from improved agricultural practices in MS and AR. This project requires both survey chambers and multiplexed chambers, each with the ability to independently monitor CO2, CH4 and N2O gasses. (While the survey chambers are portable, the multiplexed systems are for continuous monitoring of GHGs.) We have already purchased and deployed this equipment in the field and have been collecting data for nearly a year. However, spare chambers are required while existing chambers are serviced so that we do not lose data during repair and maintenance. Please note: This is a Sole Source Notification.