Testing Conducted by: Oak Ridge National Laboratory (U.S. Department of Energy)
Location: Lennox Research Facility, Carrollton, Texas
Date: April 2005
Testing Conducted by: Oak Ridge National Laboratory (U.S. Department of Energy)
Location: ASDA / Wal-Mart Super Center, Sheffield, United Kingdom
Date: December 2004
Testing Conducted by: Los Angeles Department of Water & Power (LADWP)
Location: Notrica's Market, Bellwood, California
Date: March 1998