At this crucial time when maintaining proper hand hygiene and respiratory hygiene is a very important part to fight against COVID-19 , to achieve this our main essentials are hand sanitizers and masks.Using a hand sanitizer is a major safety precaution but sometimes all of us wonder if it is really effective and even wonder how we can check the quality. As the demand and production of hand sanitizer has gone through the roof and hundreds and thousands of new bands of sanitizer have come into the market. Even in this difficult time, people are just focusing on profiteering. Fake sanitizers have flooded the market, risking thousands of lives.
Unfortunately all hands advertisers are not made to the same quality standard. In this article, we are going to show you exactly how to test a hand sanitizer at home which is more convenient and cost-effective with the simple ingredients available at home and helps to measure the quality of the hand sanitiser you are using. #sanitizerkasachh.
Here are Inputs by Dr.Saurabh Arora, Arbro Pharmaceuticals Pvt. Ltd. and Auriga Research Pvt. Ltd which provides 3 effective ways to to test the hand sanitiser at home with basic ingredients available.
3 best ways to to test the hand sanitiser at home with basic ingredients available.
For testing the hand sanitizer at home you need very commonly available items listed below –
- Roll of tissue paper (toilet paper)
- Ballpoint pen – please make sure that the ballpoint pen you use for conducting this test Is not water washable. We have tried with Reynolds and their pens work just fine and are readily available in most homes or offices. Please do not use a Gel pen or an ink pen.
- Anything with you can draw a nice small circle, a coin or even the cap of your sanitizer bottle can work just fine.
- Half cup of wheat flour
- Some plates and bowls
- A hair dryer
With these commonly available items you can easily conduct all three tested detailed below –
The Tissue paper test or Toilet paper test for Hand Sanitizer
- Take a small piece of tissue paper and keep it on a flat surface like a table or kitchen counter. It is important that you do not make a thick wad of the tissue paper as you want the sanitizer to defuse sideways only and not down into the tissue paper.
- Use a ballpoint pen and carefully draw a circle on the paper by outlining a coin or the cap of the hand sanitizer bottle. Make sure the line is continuous, thick and clear.
- Place a few drops of the hand sanitizer liquid or gel in the middle of the circle. Neither should you add too much sanitizer that it overruns the line nor should it be too little that it doesn’t diffuse past the line.
- Let the hand sanitizer slowly diffuse and move out of the circle. The liquid sanitizer will diffuse almost instantly while the gel-based will take some time.
- You can also repeat this with a little bit of water to see how a fake sanitizer without alcohol behaves.
If the sanitizer contains sufficient quantities of alcohol you will see that the line that you had drawn with the ballpoint pen will dissolve in the sanitizer and the colour starts to spread out. However if the sanitizer does not contain the required quantity of alcohol the line will not be dissolved and the sanitizer will just defuse past the line without any change.
This simple test is based on the principle of paper chromatography, The ink which is used in water resistant ballpoint pen does not dissolve in water but very quickly dissolves in alcohol. This causes the ink to move along the front of the diffusing sanitizer and spreading out. If the alcohol content is less the solubility of the ink is not sufficient and the line doesn’t move.
The Wheat Flour Dough Test for Hand Sanitizer
- Take one tablespoon of wheat flour on a plate. You can also take maize or other flr that quickly forms a dough with water.
- Add one tablespoon of the sanitizer you want to test. Do not add too much of the sanitizer as even real sanitizer contains 30% water which can make the dough if you add too much to the flour.
- Knead the flour and the sanitizer together to make a dough.
- If the sanitizer contains an excess amount of water the flour will quickly become sticky and eventually turn into a dough.
- If it contains the right amount of alcohol the flur will not become sticky and stay like a powder and eventually the sanitizer will dry up leaving behind the flour.
This test is based on the simple fact that flour needs water for the gluten and carbohydrates to swell and become sticky and turn into dough. Alcohol on the other hand competes with the gluten and carbohydrates for the water molecules and won’t let them hydrate and become sticky. This test is very sensitive and can easily detect samples with 60% or less of alcohol.
The Hair Dryer test for Hand Sanitizer
- Take one tablespoon of the sanitizer in a small bowl.
- In another bowl take some water
- Using a hair dryer dry the sanitizer for 30 seconds. Make sure to let the hair dryer heat up before you start.
- In the same way and at the same temperature dry the water.
- If the sanitizer has the required amount of alcohol it will dry up significantly compared to the water.
This test is based on the principle that alcohol has a much lower boiling (78 C) point compared to water (100 C).
- With inputs from Dr.Saurabh Arora, Founder of www.Testing-lab.com