According to CDC guidelines, what is an appropriate method for disinfecting dental impressions?

CDC guidelines recommend that dental impressions be rinsed with water to remove blood and saliva, then disinfected using an intermediate-level disinfectant before being sent to the dental laboratory. A 0.5% sodium hypochlorite solution (1:10 dilution of household bleach, approximately 5,000 ppm) is an appropriate intermediate-level disinfectant for impressions. Immersion for 10 minutes achieves adequate disinfection. Alcohol sprays (70% isopropyl alcohol) are less effective and do not achieve intermediate-level disinfection for all impression materials. Water alone is insufficient. Autoclaving distorts most impression materials and is inappropriate.