Each sample is cleaned using the Tennant EH5 cleaning process. The first step is to vacuum with the Tennant V-LWU-13 upright vacuum 4 passes at 1.8ft/sec on each pass.. The next step is to pre-spray with Orbio Multipurpose Solution at 1.0gl/200ft2 followed by agitation using a Gandigroom carpet rake. The treated sample is allowed to dwell for 10 minutes prior to cleaning. The following step is to hot water extract with Orbio 5000-Sc@140º using the High Air Flow Titanium Wand 4 wet extraction passes at a rate of 1.0ft/sec on each pass.