Popular science small knowledge: how to correctly use alcohol disinfection?

Affected by the epidemic, 

people have become accustomed to 

wearing masks and disinfection with alcohol

75% alcohol sterilizes best!

It inhibits a variety of other bacteria, 

including disease-causing escherichia coli, 

Staphylococcus aureus and Candida albicans

Attention!Attention!Attention!
75% alcohol does disinfect effectively, 

but it's also a fire hazard.

It can be ignited when the concentration of ethanol in the air exceeds 3%.

So, it's important to learn how to use it correctly

↓↓↓

1、do not spray directly in the air！

When the alcohol concentration is higher than 70%, the volatilization of alcohol increases the combustible gas in the indoor air, and it is easy to flash when it meets little Mars！

2、do not use near the heat source, avoid open fire.

To disinfect the surface of an electrical appliance, turn off the power first and wait for the appliance to cool down.

To wipe the kitchen hearth with alcohol, turn off the fire source first, and close the lid of the container immediately after each use.

Focus, everyone!
Don't spray! Avoid open fire!

1、pay attention to indoor ventilation

When using alcohol indoors, ensure that the room is ventilated. After using cloth cleaning tools such as towels, wash them with plenty of water and store them in an airtight place or dry them in a ventilated place.

2、avoid light storage to prevent dumping damage

Alcohol containers must be securely sealed. No LIDS are allowed.Should avoid storage in glass bottles to prevent falling damage.

Do not put in the balcony, hearth and other heat source environment, also do not put in the power socket near the wall, table corner and other places, to prevent accidental dumping.

Can avoid light stored in cabinets and other cool place, storage to cover tightly, paste labels, to avoid volatilization.

3、Keep away from children when storing

For families with young children, alcohol should be kept out of reach of children. For older children, parents can explain the characteristics of alcohol and teach children not to play with alcohol, let alone light it with fire.

Epidemic prevention emergency must be reminded, 

do not hoard!

Just enough in a small bottle

In case the alcohol catches fire...

Don't panic, my friends

■ Splash water to extinguish fire, large amount is the key

Alcohol fires can be put out with water.But it takes a lot of water instantly. Adding a large amount of water in a short period of time can quickly cool the part of the fire below the ignition point, so as to achieve the effect of extinguishing the fire. Otherwise the water will only dilute the alcohol and continue to burn.

The best way to put out an alcohol fire is to cut off the oxygen from the source.In practice, it is best to use a large covering object such as a quilt.If you are using a small object such as a T-shirt, you may need to cover it repeatedly, but it is not a quick slap. In addition, to prevent the covering from igniting itself, it is best to wet the covering beforehand when possible. In addition, the same principle applies to putting out a fire by covering it with sand.

Dry powder fire extinguishing principle is also oxygen.However, dry powder is corrosive to some extent. If sprayed directly to the human body, it is likely to cause secondary damage to the burned skin. Therefore, when using, pay attention not to spray directly to the human body.

During the epidemic, 

it is important to do a good job of disinfection, 

of course, do not just busy disinfection, 

in order to avoid causing serious injury to themselves and others, 

the above knowledge should also know oh ~