When it comes to the prevention from coronavirus, one must listen to the doctor, wash their hands frequently for about 20 seconds,use WHO (World Health Organization) formulated hand sanitizer, and wear mask.
Since the coronavirus outbreak, the demand of hand sanitizer has soared. Situation has reached a point where it has become difficult to find a hand sanitizer at super market or at drug store.
Here is a solution, people can make their own hand sanitizer at home with WHO recommended recipe.
Hand sanitizer at home with WHO formula
The formula for hand sanitizer local preparation given by World Health Organization (WHO) is in the light of logistic, economic and religious factors which can be used worldwide. The only alcohol based hand sanitizer can effectively inactivate the potentially harmful microorganism on hands.
Hand sanitizer at home with WHO formula is so easy; only 3 ingredients are required to make it.
Required Chemicals for Hand Sanitizer as Per WHO Formula
Hydrogen peroxide 3%
Sterile distilled or boiled cold water
Glycerol is only used for skin care purpose.
Hydrogen peroxide is used to inactivate the bacteria that are contaminating the solution.
10-litre glass bottles with stoppers
50-litre plastic tanks (preferably polypropylene or high density polyethylene)
Stainless steel tanks with a capacity of 80–100 liters
Wooden, plastic or metal paddles for mixing
Plastic or metal funnel
100 ml plastic bottles
500 ml glass bottles with screw tops
An alcoholmeter to determine the amount of alcohol in fluid
Required amount of Chemicals
The quantity of chemicals required by WHO recommended formula is
Ethanol 96%: 8333 ml
Hydrogen peroxide 3%: 417 ml
Glycerol 98%: 145 ml
Step by Step Process of Preparing Hand Sanitizer
The amount of alcohol mentioned in a formula is poured into large bottle up to the graduated mark
Add measured amount of hydrogen peroxide.
Then add measured quantity of glycerol. As the viscosity of glycerol is high so make sure all the quantity sticks to the measuring cylinder and go into the solution. For this purpose wash measuring cylinder with distilled water or cold boil water and emptied the cylinder in solution.
Add 10 liters of distilled water or cold boiled water in alcohol, hydrogen peroxide, and glycerol solution.
After adding water immediately cover the bottle with lid to avoid evaporation.
Now mix the ingredients by either gentle shaking of bottle or using paddle.
Now transfer the finally prepared solution into bottles and place it in quarantine for 72 hours before use. This is the recommended time period to destroy the already present spore in alcohol and in bottle.
The final product should have Ethanol 80% (v/v), Glycerol 1.45% (v/v), and Hydrogen peroxide 0.125% (v/v). Verify the concentration of alcohol carefully by using alcoholmeter.
If the concentration of alcohol is not according to recommended concentration then make the necessary adjustments in formula which is allowed. The accepted limits with the formula are ± 5% of target concentration.
For external use only
Avoid contact with eyes, if occurred wash with cold water
Keep out of the reach of children
Put few drops and rub it against hands until it dries out.
Highly flammable keep it away from fire.
Keep it at room temperature
Keep It In Mind
The addition of fragrance, color or any additives except the ingredients give above is not recommended by WHO. Any kind of gel used in the production of sanitizer is prohibited because it causes allergic reaction. Only measured quantity of ingredients should be used.
Note: the quantity of ingredients can vary according to the required output. For details you can check WHO (World Health Organizations) website.