IS 1355 : 2025 — Coal and Coke - Determination of chemical composition of ash (Second Revision)

What is IS 1355 : 2025?

IS 1355 : 2025 is an Indian Standard published by the Bureau of Indian Standards (BIS) under the title Coal and Coke - Determination of chemical composition of ash (Second Revision). It falls under the <strong>Coal and Petroleum products</strong> group and is administered by the Ministry of Coal. Certification under this standard is voluntary.

How to get certified for IS 1355 : 2025

1. 1
   Apply online — Submit the BIS portal application with product details, factory information, and test reports.
2. 2
   Lab testing — Submit product samples to a BIS-recognised testing laboratory for evaluation against the standard.
3. 3
   Factory inspection — A BIS officer visits your manufacturing facility to verify quality control systems.
4. 4
   Licence grant — On approval, BIS issues the licence. You may then affix the ISI Mark on compliant products.

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