What is ISO and GS1? ISO International Organization for Standardization is a voluntary organization whose members are recognized authorities on standards. The organization promotes Worldwide proprietary, industrial and commercial standards. ISO has 164 national members, out of the 206 total countries in the world. GS1 GS1 is a neutral, not-for-profit, international organization that develops and maintains standards for supply and demand chains across 110 countries. GS1 has over a million member companies across the world, executing more than six billion transaction daily using GS1 standards. Works closely with the Life Science and Retail Markets