********** "Both the total microscopic count and the PCR count obtained for air samples decreased significantly. This could be caused by direct reduction of spores in the air or reduction of spores on surfaces that would serve as the source for the airborne spores. However, no decrease was observed in the semiquantitative analysis of amount of spores and hyphae in the stickytape samples collected from surfaces."

2020. During the severe pandemic of coronavirus, the development and deployment of efficient disinfection technology have attracted hospitals’ attention..

The present invention relates to polymer gel for releasing chlorine dioxide gas and a method for packaging food including the same. A chlorine dioxide solution, including a sodium chlorite solution and a buffer solution having a buffering range of pH 3-4, is absorbed into a polymer and therefore the chlorine dioxide gas of 0.2-5 ppm is continuously released for 14-18 days to prevent growth of harmful microorganisms during a distribution period. Consequently, the distribution period can be extended, when compared to an existing polymer gel, by maintaining freshness.

best selling fogger over the past few years, being lightweight and easy to handle whilst still having a good size 6 litre tank.

"A Chlorine Dioxide pass-through room provides a cost effective method to decontaminate components, parts, supplies, and equipment"

"Compared to gaseous chlorine dioxide, which spreads throughout an entire facility and penetrates into the smallest cracks, fogging has some limitations. Liquid fogging has many factors that reduce the ability of this agent to reach all the required areas for the required amount of time in order to achieve a successful decontamination cycle. Liquids have difficulty penetrating into crevices as they cannot overcome the surface tension." "Fogging with a liquid chlorine dioxide provides a more economical disinfection method compared to gaseous decontamination, offering a value proposition for less critical contamination control applications."

Application of chlorine dioxide in air via ultrasonic nebulizer was much more effective than via jet nebulizer

{Chlorine dioxide application in air via humidifier} " The efficacy of a given aerosolized biocide when used within a specific application will be dependent on the design of the aerosolization device and, hence, standardization of output (fog rate and droplet size) as well as the volume and topography of the environment to be decontaminated."

2020. Gaseous chlorine dioxide (ClO2) is a promising sanitizer for frozen products because of its efficacy under nonthermal and waterless conditions. Our pilot‐scale treatment of blueberries demonstrated t...

The Tufts New England Regional Biosafety Laboratory facility has been using chlorine dioxide gas for >5 years, and >100 decontaminations have been done at the r...

Chlorine dioxide gas decontamination services

Contamination control and biodecontamination articles, including related to COVID-19.

Contamination control and biodecontamination.

Hydrogen Peroxide is more corrosive to computers than chlorine dioxide.

Spore strips used to verify decontamination cycle's efficacy in water bottles, closed cabinets, HEPA air filters, laboratory cage lids, packed storage rooms, and medical isolators; and underneath equipment and dust.

Process description for chlorine dioxide gas decontamination

"...a novel, lightweight, compact, reusable decontamination technology to sterilize Ebola-contaminated medical devices at remote clinical sites lacking infra-structure in crisis-stricken regions of West Africa (medical waste materials are placed in bags and burned). The basis for effectuating sterilization with FDKs is chlorine dioxide (ClO2)" "NSRDEC research scientists developed an ensemble of ClO2 technologies designed for different applications in decontaminating fresh produce; food contact and handling surfaces; personal protective equipment; textiles used in clothing, uniforms, tents, and shelters; graywater recycling; airplanes; surgical instruments; and hard surfaces in latrines, laundries, and deployable medical facilities. These examples demonstrate the far-reaching impact, adaptability, and versatility of these innovative technologies."

{Applications at various Relative Humidity} Based on past remediation efforts, it is generally accepted that in order to achieve adequate kill, chlorine dioxide fumigation of a building requires a minimum relative humidity (RH) of about 65%, with a target ClO2 concentration and exposure time of 750 ppmv for 12 hours, for a total concentration of 9000 ppmv-hrs (CT). Other researchers have recommended a RH of greater than 70% for ClO2 concentrations between 125 and 10550 ppmv. Under current EPA guidelines, applications of ClO2 for building remediation require 75% relative humidity and an exposure of 9000 ppmv-hrs. {Includes info on corrosion mitigation.}

Maverick Transportation's Greg Johnsen is petitioning TMC to update their recommended practices for truck cab sanitizing in hopes to help combat COVID-19.

{Gives doses for air applications in ppm and grams of PureVista tablets for fumigation and other uses} "Placing (1) PureVista 100 (100 g/3.53 oz.) into 4 liters/1 gallon of water provides 2,000 ppm solution. "

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"The FDA has yet to approve any of the submitted Emergency UseAuthorizations (EUAs) for decontamination of N95 FFRs with ClO​2​ gas. However, ifimplemented properly and adequate concentration of ClO​2​ gas and humidity ismaintained in the sterilization chamber or other space for an adequate duration toachieve a dose of at least 720ppmv-hrs, it is likely that ClO​2​ gas will completelyinactivate SARS-CoV-2 and harder-to-kill pathogens on N95 FFRs. This inference is based on results from similar viruses, but has not yet been confirmed directly forSARS-CoV-2 by peer-reviewed studies. ​Damage to the strap integrity and fit ofsome models of N95 FFR has been reported after ClO​2​ treatment, and thereforemodel-specific integrity of the FFRs used in each setting should be verifiedbefore implementing a ClO​2​ gas decontamination approach​. We once againstress that (i) after each round of decontamination, a user seal check should beperformed, and (ii) extended cycles of doffing and re-donning may affect FFR fit."

Sodium chlorite to make chlorine dioxide against avian influenza

{This study seems to actually report the concentration of chlorine dioxide in the liquid solution used, rather than the air in the gas chamber} "Chlorine dioxide gas at either 500 ppm or 1,000 ppm was created according to the instructions of the manufacturer in the gas chamber through the use of 6 g Aseptrol S10-Tab tablets (Engelhard Corporation, Iselin, New Jersey) dissolved in distilled water. The gas chamber was then sealed for 24 h at room temperature under a fume hood."

The facility was appropriately sealed, supplied with gas distribution mechanisms and demonstrated to have met the specification for humidity before introduction of ClO2. The total exposure for this ***4800 cubic meters structure was approximately 400 ppm-hr. *** "Most of the sealing was performed on exterior surfaces. All vents or potentially leaky seams along the roof, which included vents adjacent to roof gutters and ridge vents, were sealed using combinations of caulk, expanding foam, duct tape and adhesive films. The exhaust and air supply units for the building were deactivated and their associated vents on the exterior walls and roof were sealed."

**** "Spinach samples exposed to ClO2 gas for 30 min actually achieved less reduction than did the water wash, and 1 h exposure reduced Salmonella only 0.6 CFU/g, somewhat but not significantly less than water.**** When chlorine dioxide was used on tomatoes inoculated with Salmonella, reductions of 2.94 and 3.86 log were obtained with 8 mg/L for 60 s or 10 mg/L for 120s, respectively... similar results, achieving a more than 5 log reduction in Salmonella on innoculated tomato skin surfaces after treatment with 0.5 mg/L ClO2 gas for 12 min."

"Incorporation of three commercially available decontaminant technologies [including chlorine dioxide] into a SAP gel promotes inactivation of B. anthracis spores without observable physical damage to the test surface."

After decontamination with chlorine dioxide gas, no culturable B. atrophaeus was detected in 24 of 27 samples (89%). However, QPCR analysis showed that B. atrophaeus DNA was still present after decontamination with both methods. Environmental background material had no apparent effect on decontamination

In this study, we evaluated and compared the antibacterial activity of chlorine dioxide (ClO2) and sodium hypochlorite (NaClO) on various multidrug-resistant strains in the presence of bovine serum albumin and sheep erythrocytes to mimic the blood contamination that frequently occurs in the clinical …