Chemical-ready and vacuum-equipped, the lab-certified SDV models are built for heavy-duty, multi-purpose cleaning and disinfection. By offering detergent-injection in addition to standard steam-cleaning, both models make it easier to disinfect and dry the toughest, most hazardous environments. The smaller-capacity 4500 is ideal for shorter-duration use, while the full-size 8000 can run for up to 12 hours without a break.