Insulated flasks, bottles, and containers for home usage BIS certification guarantees conformity with Indian Standards, product quality, and safety. The main relevant guidelines are IS 17569:2021 (Insulated Food Containers), IS 17526:2021 (Stainless Steel Vacuum Bottles), and IS 17790:2022 (Insulated Flasks). Manufacturers have to apply via the BIS site, have products tested in labs approved by BIS, and pass a factory inspection. The Quality Control Order (QCO) mandates certifications. Penalties under the BIS Act, 2016 could follow from non-compliance. Domestic industry and imports depend on this certification to guarantee premium insulated goods for the Indian market.