About disinfection and sterilization method of COVID-19（Antivirus）

Antivirus measures for hands and fingers

1. Hand wash

It is most important to wash away the virus on your hands and fingers. The number of viruses adhering to hands and fingers can be reduced to 1/100 by just washing hands with running water for 15 seconds, washing with soap or hand soap for 10 seconds, and rinsing with running water for 15 seconds to 1 / 10,000. ..No additional disinfectant needs to be used after hand washing.

2. Alcohol (ethanol with a concentration of 70% or more and 95% or less)

Alcohol disinfectants are also effective in situations where you cannot wash your hands immediately.Alcohol is detoxified by breaking the "membrane" of the virus.

<How to use>

Use ethanol with a concentration of 70% or more and 95% or less (*) and rub it well.

(*) There is a report that disinfection with 60% ethanol is considered to have a certain effect, and if 70% or more of ethanol is difficult to obtain, disinfection using 60% ethanol is acceptable.

<Caution>

* Please refrain from using if you are sensitive to alcohol.

* It is flammable. Never spray in the air.

Antivirus attached to things

1. hot water

For tableware and chopsticks, hot water can kill the virus.

<How to use>

Expose to hot water at 80 ° C for 10 minutes.

<Caution>

* Be careful not to get burned.

2. Chlorine bleach (sodium hypochlorite)

"Sodium hypochlorite", which is the main component of commercially available chlorine bleach, is effective for tables and doorknobs. It destroys and detoxifies the new coronavirus by the oxidizing action of "hypochlorous acid".

<How to use>

Dilute a commercially available household bleach to a concentration of sodium hypochlorite of 0.05% and wipe it. Then wipe it with water.

<Caution>

* Please refrain from using if you are sensitive to chlorine.

* Be careful not to get this in your eyes or on your skin.

* Be careful not to swallow or inhale.

* It is dangerous to mix with acidic substances because chlorine gas is generated.

* It is different from "hypochlorite water" (see Reference Information 2). Simply diluting "sodium hypochlorite" with water does not make it "hypochlorous acid water".

* Please note that if sodium hypochlorite is used for metal objects, it may corrode.

3. Detergent (surfactant)

For tables, doorknobs, etc., "surfactants", which are the main components of commercially available household detergents, are also partially effective. Surfactants are detoxified by breaking the "membrane" of the virus. Nine surfactants have been confirmed to be effective against the new coronavirus (according to NITE verification).

Surfactants (9 types) judged to be effective from the NITE verification test results

• Sodium linear alkylbenzene sulfonate (0.1% or more)

• Alkyl glycoside (0.1% or more)

• Alkyl amine oxide (0.05% or more)
  

• Benzalkonium chloride (0.05% or more)

• Benzethonium chloride (0.05% or more)
  

• Dialkyldimethylammonium chloride (0.01% or more)

• Polyoxyethylene alkyl ether (0.2% or more)

• Pure soap (potassium fatty acid) (0.24% or more)

• Pure soap (sodium fatty acid) (0.22% or more)

<How to use>

Select a household detergent that contains an effective surfactant.

1. For furniture detergents, use as is according to the instructions on the product.

2. Forkitchen detergent, dilute it before use.(A list of detergents containing effective surfactants and how to use them are available on the NITE website.)

<Caution>

* Be careful not to get this in your eyes.

* In principle, do not use on fingers or skin. (Products for fingers can be used.)

* Be careful not to swallow or inhale.

* NITE has not verified the effects of these 9 types of surfactants on other pathogens such as norovirus.

4. Hypochlorite water

Some "hypochlorous acid water" is also effective for tables and doorknobs."Hypochlorous acid water" is an acidic solution containing "hypochlorous acid" as the main component. It destroys the new coronavirus and detoxifies it by its oxidative action. There are several manufacturing methods, but it has been confirmed that a certain concentration of "hypochlorite water" reduces the infectivity of the new coronavirus to a certain extent (NITE verification).

<How to use>

Clean the things you want to disinfect in advance.

1. For wiping, use plenty of hypochlorous acid water with an effective chlorine concentration of 80 ppm or more (100 ppm or more for products in which sodium dichloroisocyanurate is dissolved), and after wetting the surface of the item you want to disinfect with flutter, 20 seconds or more. Wipe it off with a clean cloth or paper. If the original stain is severe, it is desirable to use one with an effective chlorine concentration of 200 ppm or more.

2. If you want to disinfect things with freshly generated hypochlorous acid water, use a water solution of 35ppm or more. Rinse for at least 20 seconds and then wipe with a clean cloth or paper.

<Caution>

* Please refrain from using if you are sensitive to chlorine.

* Be careful not to get this in your eyes or on your skin.

* Be careful not to swallow or inhale.

* It is dangerous to mix with acidic substances because chlorine gas is generated.

* Because it is an unstable substance, store it in a cool and dark place and use it up as soon as possible.

* Please refrain from purchasing products for which you do not know the ingredients.

* It is different from "sodium hypochlorite". Simply diluting "sodium hypochlorite" with water does not make it "hypochlorous acid water".​

5. Alcohol (ethanol with a concentration of 70% or more and 95% or less) [Repost]

<How to use>

Wipe off with ethanol with a concentration of 70% or more and 95% or less (*).(*) There is a report that disinfection with 60% ethanol is considered to have a certain effect, and if 70% or more of ethanol is difficult to obtain, disinfection using 60% ethanol is acceptable.

<Precautions>

* Please refrain from using alcohol-sensitive people.* It is flammable. Never spray in the air.

Antivirus in the air​

○ Ventilation

In order to discharge fine particles such as the new coronavirus to the outside of the room, it is necessary to ventilate the room frequently and replace the air in the room.Ventilate regularly, taking care that the room temperature does not rise or fall significantly. When ventilating using windows, open the two-way windows at least twice an hour for several minutes to allow wind to flow. In addition, it is not recommended to use a product that claims to have a disinfecting or sterilizing effect in an environment where there are people, because it may adhere to the eyes and skin and may have health effects due to inhalation.

In addition, it is not recommended to spray a product that claims to have a disinfecting or sterilizing effect on the mask and use the mask in a state where the drug is inhaled because it may cause health problems.