How to make a homemade sanitizer
Hand hygiene has received a lot of attention recently. But what if there is no soap and water nearby?
Here’s how to make a homemade sanitizer.
- Warning! Perform the experiment in a well-ventilated area.
- Observe safety rules when working with fire: this mixture contains flammable substances.
- 450 mL 99% isopropyl alcohol;
- 9 mL glycerin;
- 16 mL cold drinking water;
- 25 mL 3% hydrogen peroxide;
- containers with dispensers.
Mix 450 mL 99% isopropyl alcohol, 9 mL glycerin, 16 mL cold drinking water, and 25 mL 3% hydrogen peroxide in a bottle. Mix the resulting solution well and let sit for 72 hours in a cool, dark place. Distribute the sanitizer into convenient containers with dispensers. This recipe was taken from the official website of the WHO.
In order for the sanitizer to be as effective as possible, it must contain at least 60–70% alcohol. This can be either isopropyl alcohol or ethyl alcohol. Only at these concentrations and higher can the alcohol destroy the lipid membranes of viruses and microorganisms, killing any pathogenic microorganisms. Strong alcoholic beverages are not suitable for this purpose, as their alcohol concentration is not high enough.
Glycerin is added to the antiseptic as a moisturizer, and hydrogen peroxide is needed to destroy the spores of various bacteria that could potentially be in the solution. You can also add 2-3 drops of any essential oil or lemon juice to the mixture, as this will lend the sanitizer a nice aroma without affecting its antimicrobial properties. But exercise caution: the WHO mentions that such fragrances can cause an allergic reaction in some people.
The prepared solution needs to sit for a time, as this will allow the hydrogen peroxide to completely destroy any bacterial spores that may be present in the mixture.
Apply your sanitizer according to these guidelines:
- Squeeze out a few drops of the antiseptic and rub your palms and fingers thoroughly.
- Don’t forget about your fingernails – pathogens can hide under them too!
- Keep rubbing your hands until they dry. This should take from 15 to 30 seconds.
Unfortunately, an antiseptic will not work if your hands are too dirty or oily.
To protect yourself as effectively as possible:
- Avoid touching your face, mouth, and eyes.
- Wash your hands with soap for at least 30 seconds.
- If possible, use a sanitizer or wear gloves.
Now you know how to make a homemade sanitizer.
Source: Mel Science