Iodine 0.2N/0.1M Volumetric Solution according to Wijs 2.5L used in analytical chemistry for oxidation-reduction titrations, where it acts as a standard solution to accurately determine the concentration of reducing agents in a sample by measuring the volume of iodine solution needed to reach an endpoint in a reaction; essentially, it is used to quantify the amount of a substance that can be oxidized by iodine through a chemical reaction.
Isopropyl alcohol, particularly in solutions between 60% and 90% alcohol with 10 – 40% purified water, is rapidly antimicrobial against bacteria, fungi, and viruses. Once alcohol concentrations drop below 50%, usefulness for disinfection drops sharply. Notably, higher concentrations of alcohol don’t generate more desirable bactericidal, virucidal, or fungicidal properties.