Is 91 percent isopropyl alcohol the same as 70?

It has to do with the percentage of alcohol by volume. A lower percent-alcohol means there’s more water diluting the mix in the bottle. But according to microbiology, 70 percent alcohol is probably more effective than 91 percent for disinfecting—depending on what kind of germs you’re trying to kill.

How do you make 70\% IPA from 90\% IPA?

Thus, adding 35.35mL of 99\% IPA to 14.65mL of distilled water creates a 50mL solution of 70\% IPA. Step 2: V2 – V1 = Quantity of distilled water to add with available bottle supply.

How do you make 70\% alcohol?

Add 350 mL of 100 percent isopropyl alcohol to a 500 mL graduated cylinder. Ensure that the measurement is read at eye level with the meniscus, the bottom of the curved liquid, at 350 mL. Add an additional 150 mL of water to the graduated cylinder for a total volume of 500 mL, again measured at eye level.

Can you dilute isopropyl alcohol?

Dilute by adding 1 part water to 2 parts of this 99\% Isopropyl Alcohol.

Can you dilute 70 alcohol with water?

While it is generally okay to use it at the 70/30 ratio, many detailers prefer to dilute it down to a 50/50 (Alcohol to Distilled Water) ratio for optimal results.

Is 91 isopropyl alcohol good for disinfecting?

While 70\% isopropyl alcohol makes a very effective disinfectant, the more concentrated version of 91\% isopropyl alcohol also has some incredibly beneficial uses. This liquid can also be used to clean and disinfect surfaces, and it’s safe to use on skin too.

Can you dilute 70 isopropyl alcohol with water?

What water should I use to dilute isopropyl alcohol?

If you find only 91\% isopropyl alcohol available buy it and dilute it to 70\%, because the 30\% water makes it more effective at killing virus. The simple way to do this is to add 0.3 part water (three tenths) to one part 91\% alcohol.