****!!!!****!!!! "Under the tested treatment conditions, the highest population of surviving spores was found on the paper surface and the lowest was found on the plastic surface (p .05). The 5 mg/L ClO2 gas treatment inactivated 2.5, 3.6, 4.0, and 4.9 log spores per surface on paper, wood, epoxy, and plastic surfaces, respectively. A greater than 5-log reduction of spores was achieved on each surface after the 15 mg/L ClO2 gas treatment. The minimum ClO2 gas concentration needed to completely inactivate the inoculated spores was 30 mg/L for paper and wood surfaces, 25 mg/L for epoxy surfaces, and 20 mg/L for plastic surfaces."

"CD was highly efficacious in reducing B. subtillis spores onpaper, plastic, epoxy-coated stainless steel, and wood surfaces(7). In addition, no corrosion was observed when using pharmaceutical-type materials such as 316 and 304 series stain-less steel, Lexan, and other commonly used plastics includingDelrin, Teflon, UHMWPE, Viton, and PVC (8). In a separatestudy, postexposure rinses of 304 stainless steel coupons inwater-for-injection showed no residual CD when measuredwith a high-pressure liquid chromatographic method for chlo-ride detection"