****!!!!****!!!!**** Efficacy of chlorine dioxide (CD) gas generated by two distinct generation systems, Sabre (wet system with gas generated in water) and ClorDiSys (dry system with gas generated in air)" "exposure time is more critical than CT as long as the concentration is maintained within a target range. Additionally, in future building cleanup efforts, lower concentrations may be favored in many instances to avoid issues with material or equipment compatibility" "The CD dose required for complete spore kill on biological indicators (typically, 1E6 spores of Bacillus atrophaeus on stainless steel) was significantly less than that required for decontamination of most of the building materials tested." "for all of the other five materials, the time required to achieve successful fumigation was determined to be independent of the fumigant concentrations used"

2021 March

{ClorDiSys equipment was used} Efficacy of ClO2 as a decontaminant is greatly enhanced at a relative humidity greater than 60% (1990 stu "some ClO2 continued to be sensed outside of the space... level did not exceed the Dräger tube sensitivity of 0.1 ppm. The mean concentration within the ICU/NICU during the decontamination was approximately 40 ppm" "a total ClO2dosage of ~400 ppm-hr was applied over a single evening" "ClO2 is a fairly selective oxidant, which is not expected to react with typical building materials (including wood) or soil. " "Future experiments within controlled spaces are in order to isolate the most significant absorption and/or reaction sites to aid in the practical design of decontaminations"