ISI Mark Requirement

The ISI (Indian Standards Institute) Mark is the product certification mark issued by the Bureau of Indian Standards (BIS) to manufacturers who have been licensed to certify that their product conforms to a specific Indian Standard. The name "ISI Mark" is colloquial, BIS replaced the ISI name officially with BIS, but the mark itself is still widely referred to as ISI by procurement officers and contractors. Under the BIS (Conformity Assessment) Regulations 2018, certain categories of products are under Compulsory Certification, meaning they cannot be manufactured, imported, or sold in India without a BIS licence and the ISI mark. Many government NITs additionally specify the ISI mark as an eligibility requirement even for products not under compulsory certification, as a quality assurance mechanism.

What is the ISI Mark requirement in government procurement?

When an NIT specifies that goods must conform to a particular IS code and bear the ISI mark (or BIS certification mark), it means the manufacturer must hold a valid BIS product certification licence for that IS code. A BIS licence is not self-certification, it requires the manufacturer to pass an initial factory audit by BIS inspectors, demonstrate conformance of product samples tested at a BIS-recognised laboratory, and maintain a factory Quality Management System. Once licensed, the manufacturer may stamp the BIS certification mark (a hexagonal mark with "ISI" and the IS number) on the product.

Products under compulsory BIS certification include electrical goods (wiring cables, switches, MCBs, luminaires), LPG cylinders and regulators, helmets, cement, steel skeletal items, packaged drinking water, and children's toys, among hundreds of categories. For these items, no government buyer can accept goods without the ISI mark, regardless of what the NIT says, the law itself prohibits unlicensed supply.

For products not under compulsory certification, NITs may still specify "goods conforming to IS XXXX and bearing ISI mark" to give assurance that the supplier has undergone third-party conformity assessment. In some cases, the NIT allows equivalent certifications from recognised bodies (CE marking, UL listing) for imported products where no equivalent Indian Standard exists.

Bidders must submit a copy of the valid BIS product certification licence as part of the technical bid. The licence lists the IS number, the licensed product description, and the validity date. An expired licence or a licence that does not cover the specific product variant (different rating, size, or material) specified in the NIT is grounds for rejection.

Why it matters for bidders

For product manufacturers and traders, maintaining valid BIS licences for all relevant IS codes is a competitive necessity in government procurement. Many PSUs and central government buyers will not even consider a product without BIS certification, regardless of the price competitiveness. Procurement officers at government departments often face personal accountability under CVC guidelines if they accept uncertified goods, so they enforce the ISI mark requirement strictly.

Traders (as opposed to manufacturers) who source from multiple factories must ensure that the factory of origin for the goods being supplied holds the valid BIS licence. Submitting goods from an unlicensed factory while presenting the BIS licence of a different (licensed) factory is a fraudulent practice that can result in blacklisting.

For imported products, BIS now issues BIS Foreign Manufacturer Certification Scheme (FMCS) licences to overseas factories producing goods under compulsory certification categories. Importers must ensure their overseas supplier holds an FMCS licence before attempting to supply such goods under a government contract.

Example

A central government ministry tenders for supply of 10,000 LED luminaires for street lighting in a government township. The NIT specifies that luminaires must conform to IS 10322 (Part 5) and bear the BIS certification mark. A manufacturer bidder submits its BIS certification licence for IS 10322 (Part 5/Section 1) along with its technical bid. During evaluation, the committee verifies the licence number on the BIS portal (bislicensee.bis.gov.in) and confirms it is valid and covers the specific product rating. A trader-bidder who sources from an unlicensed factory submits a fake BIS licence; this is detected during verification and the bidder is disqualified and reported to BIS for action.

Key rules / thresholds

• BIS maintains a public portal (bislicensee.bis.gov.in) where licence validity can be verified online, procurement officers routinely check this.
• For compulsory certification products, supply without BIS licence is a criminal offence under the BIS Act, 2016, punishable with imprisonment up to two years and/or a fine of up to Rs 2 lakh.
• BIS licences are product-specific: a licence for IS 1554 (PVC cables) does not cover IS 694 (flexible cables), each product category requires its own licence.
• Licence renewal is required before the expiry date; an expired licence makes all BIS-marked stock from that date non-compliant.