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The following recipes to carry hand sanitizer home, were created based on internet sources. These recipes were recalibrated in part by a science teacher for the percentage of alcohol in their preparation was the minimum acceptable (60% or more) for their effectiveness.

Recipe # 1 2 / 3 cups of 91% isopropyl alcohol

1 / 3 cup of aloe vera gel

8 to 10 drops of essential oil (optional)

bowl and spoon

empty container and properly sterilized.

Procedure:

1. Mixing alcohol with aloe vera gel until smooth.

2. Add the drops of essential oil (if you want flavor in the mix).

3. Place the mixture in the container with a lid.

Alcohol content: 65%

Recipe # 2 2 parts aloe vera gel

1 part distilled water (not tap water)

1 part vodka, grain alcohol (not isopropyl alcohol)

4 or 5 drops of essential oil of Tea Tree (said to be has antiseptic properties).

Procedure:

Mix all ingredients and place in a covered container. Avoid using metal utensils in the preparation of the mixture, which can cause some reaction to the natural oils in the mix.

* Recipe # 3: Family quantities

* This last recipe is a personal mix of the above ingredients and know the exact percentage of alcohol that is the end the process. I trust that meets the minimum requirements of 65%:

6 oz of aloe vera gel (specifically the version that contains 40% alcohol can get the aloe vera gel in the cosmetics section at pharmacies).

3 / 4 of a pack of 16 oz, 91% isopropyl alcohol

Procedure:

Mix ingredients in a resealable plastic bag (Ziploc type) to create a sterile environment as possible and then divide into equal portions in covered containers and spray.

Note: If someone with knowledge of chemistry can calculate the percentage of alcohol present in this last recipe home and let us know, would be greatly appreciated. It also has suggestions for the measures it. THANKS!

how to properly use hand sanitizers A: