Like we stated before, the tricky part is in the mix and ratio you prepare from the Isopropyl Alcohol and distilled water. We try and mix a 12.5% solution because it is the simplest ratio to make but you are safe to be in the 10-25% range. To achieve our 12.5% mix we use 8 ounces of 50% IPA and 16 ounces of distilled water. If you would mix these 1 to 1 you would be at a 25% IPA solution so we double the distilled water to 1 part Isopropyl Alcohol. We then transfer this to a BPA-Free 32 ounce spray bottle. A high quality spray bottle can last a long time and can be adjusted to allow you to mist or stream the mixture onto the vehicle’s surface or into a microfiber towel.
If you started with a 70% Isopropyl Alcohol solution you would end up at 35% if you mixed the distilled water and alcohol 1 to 1. If you double the water and use one part of 70% alcohol you would get a 17.5% IPA wipe which is a good strength that is easy to use and won’t harm anything.