ISO vs ISI: Key Differences Explained
ISO is the global standard-setting body (International Organization for Standardization). ISI is an Indian mark once used for product quality certification. They are not the same.
People often confuse them because both appear on labels, both relate to quality, and both use three-letter acronyms. The mix-up is reinforced when sellers loosely say “ISI mark” for any certification, making shoppers think ISO and ISI are interchangeable.
Key Differences
ISO sets worldwide standards for everything from paper sizes to food safety. ISI was a national mark on Indian goods showing they met local benchmarks. ISO is voluntary and global; ISI was mandatory in India and has largely moved to the BIS mark.
Which One Should You Choose?
Choose ISO when you need globally recognized standards for processes or products. For Indian consumer goods, look for the BIS mark instead of the outdated ISI. Don’t search for ISI on international products—it simply won’t appear.
Examples and Daily Life
Your laptop charger may carry an ISO reference for safety, while an Indian electric kettle shows the BIS logo. Seeing “ISI” on a new phone cable is a red flag; it likely means an old sticker or a fake claim.
Is ISI still valid?
The ISI mark has been replaced by the BIS mark, though old stock may still display it.
Does ISO certify individual items?
No. ISO sets standards; separate bodies test and certify that products meet those standards.
Can a product have both ISO and BIS?
Yes. A company can follow ISO guidelines and also pass BIS testing for the Indian market.