Cookware claims: non-stick, tri-ply, 304 steel
Six claims carry the cookware category. Four are measurable, one is a word about a chemical that Indian law does not restrict, and one quietly bills you for years. Here is the evidence each one actually needs.
- An ISI mark to IS 14756 permits raw material to IS 5522 or to IS 15997, which is low nickel austenitic sheet, so the mark does not assert 304.
- BIS groups cookware licences by base type, listing copper electro-deposited separately from copper or aluminium clad 2 ply and 3 ply, so tri-ply is checkable.
- No Indian rule names PFOA; the 2018 POPs Rules prohibit seven other chemicals, which makes PFOA free accurate, legal and close to empty.
- Coating thickness is a test at clause 6.5 of IS 14756, so a published micron figure needs a dated measurement per batch sitting behind it.
The ISI mark says nothing about your grade of steel
The general evidence machinery sits in our claim substantiation file and our note on front of pack claims. What follows is the category layer.
304 and 202 are AISI series designations, not Indian Standard names, and a buyer reading 304 is being sold a chromium and nickel story. Here is what the Indian system asks for. The BIS product manual for stainless steel cookware sets the raw material as IS 5522 or IS 15997. IS 5522:2014 is titled Stainless Steel sheets and strips for utensils. IS 15997:2012 is titled Low Nickel Austenitic Stainless Steel Sheet and Strip For Utensils and Kitchen Applications. Either is acceptable. A pan can therefore carry a valid ISI mark to IS 14756 and still be pressed from low nickel 200 series sheet, because the utensil standard permits it.
So the mark is not your evidence. Your evidence is the mill test certificate for the coil, naming composition, tied to the batch that became the pan, plus the ISI mark on the incoming sheet, which the same BIS product manual requires. Publish the grade on the certificate and keep the two matched through supplier changes. What makes accuracy compulsory is not metallurgy but the Consumer Protection Act, 2019, which at section 2(28) defines a misleading advertisement to include one that is likely to mislead consumers as to the nature, substance, quantity or quality of the product.
Tri-ply is a BIS grouping before it is a marketing word
BIS groups stainless steel cookware licences by type of bottom, and the categories are precise. Composite bottom splits into copper electro-deposited and cladded base. Cladded base splits again into copper clad 2 ply and 3 ply, and aluminium clad 2 ply and 3 ply. Or there is no composite bottom at all. A copper electro-deposited base and a three ply clad base are separate entries in the same government document, and they cost different money.
If your supplier licence scope reads electro-deposited and your listing reads tri-ply, that is not a translation problem. The check is physical and cheap. Ask for the licence scope wording, then section a production unit and photograph the cut edge, because three bonded layers are visible to the eye. File it against the batch. This claim gets tested by a reviewer with a hacksaw long before a regulator sees it.
Induction compatible is physics, and one licence already records it
We could not find an Indian Standard that certifies the phrase induction compatible for a pan. For pressure cookers there is something close: the BIS product manual for IS 2347 records the nature of the base in the licence scope as induction friendly or composite bottom, so for that one article the answer sits on a document you can request.
Everywhere else the claim rests on two physical facts. The base has to be ferromagnetic, which a magnet settles in a second, and flat enough to couple across the hob coil. The common failures are a small ferromagnetic disc bonded into a wide base, which behaves on a compact hob and stutters on a larger one, and a base that warps after thermal cycling. Test on the smallest and largest rings you can source, keep the result per design, and if the pan only performs across part of the range, say which part. A qualified claim survives a review cycle. An unqualified one funds the one star reviews.
PFOA free is true, unregulated here, and worth very little
PFOA was a processing aid in making fluoropolymer coatings, not an ingredient of the finished surface. The United States Environmental Protection Agency ran a stewardship programme in which eight PFAS manufacturers, among them 3M/Dyneon, DuPont and Daikin, committed to work toward eliminating PFOA from emissions and product content no later than 2015, and the EPA reports all eight met the goals. That is why the claim became available to nearly every brand at once.
In India, no rule names it. The Ministry of Environment, Forest and Climate Change notified the Regulation of Persistent Organic Pollutants Rules on 5 March 2018 under the Environment (Protection) Act, 1986, prohibiting seven chemicals: chlordecone, hexabromobiphenyl, commercial octa-BDE, commercial penta-BDE, pentachlorobenzene, hexabromocyclododecane and hexachlorobutadiene. PFOA is not among them. India ratified the Stockholm Convention on 13 January 2006 under Article 25(4), a default opt-out position under which later listings do not bind India unless an instrument is deposited. So the claim is accurate, lawful and almost empty. Hold a supplier declaration and a test report tied to the coating batch, and refuse the upgrade. PFOA free does not license non-toxic, chemical-free or healthy, and those are the words that attract attention.
Non-stick has a thickness, and the standard measures it
A coating is not a mood. It is a film with a measurable depth. The BIS product manual for stainless steel cookware lists a coating thickness test at clause 6.5 of IS 14756 and a coat thickness meter among the equipment a licensed unit has to hold. On the aluminium side, the government description of IS 1660:2024 says the standard covers wrought and cast aluminium utensils up to 30 litres, including hard anodized and non-stick unreinforced plastic coating. The coating is inside the standard, not outside it.
The operating rule follows. If your listing publishes a micron figure or a number of coats, there is a test behind it and you should hold the dated result per batch. If you are not holding it, publish the coating type and leave the number off. A missing number costs a line of copy. A wrong number is a claim about quality under section 2(28), and section 21 lets the Central Consumer Protection Authority pull the advertisement and impose a penalty up to ten lakh rupees on a manufacturer or endorser, and fifty lakh rupees for a subsequent contravention.
The warranty on the coating is the claim that bills you
A ten year warranty on a non-stick surface is a provision, not a headline. The general discipline is in our note on warranty policy and claims, so the category point is narrow. Coating warranties are carried entirely by their exclusions, usually metal utensils, dishwashers, overheating and abrasive cleaning. If the exclusion is not visible in the same place as the promise, on the listing and on the pack, then the buyer bought the promise. Put the exclusion where the claim is, price the claim rate before you lengthen the term, and never let the listing run a longer warranty than the pack.