ISI Mark for Caustic Soda – IS 252

Not yet. The government has issued the order, but the start date is not fixed. Until then, the ISI mark is optional. We follow the official notices and can tell you the latest position.

The minimum fee each year is ₹58,000 for large firms, ₹47,000 for medium firms, ₹29,000 for small firms and ₹11,600 for micro firms. Your firm size comes from your Udyam registration. BIS also works out a fee at ₹15.90 per tonne. You pay the higher amount. GST is extra. These figures are a guide, based on the BIS fee list.

Lab charges are usually ₹7,000 – ₹14,450 per sample. This is based on quotes from 3 BIS-approved labs. The final price depends on your model, its versions and the tests needed.

It usually comes under HSN 28151110. Check the code on your bill of entry, because customs decides the code for the exact product.

Yes. Factories outside India apply under the Foreign Manufacturers Certification Scheme (FMCS). They must also name a representative in India, called an Authorised Indian Representative (AIR). The licence is in the name of the factory. Once the product is mandatory, importers cannot clear the goods at customs without it.

Factories in India usually get a licence 30 to 60 days after a good test report. Factories outside India (FMCS) should plan for four to six months, including the factory visit.