The Bureau of Indian Standards (BIS), operating under the Department of Consumer Affairs, has officially notified the introduction of several new Indian Standards. These cover textiles, water quality testing, and microbiology of the food chain. The new norms will be effective from 26th August 2025, with select older standards scheduled for withdrawal on 26th February 2026.
Updates in Textile Standards
BIS has revised important textile testing standards to bring them in line with international practices and modern testing methods:
| Sl. No | New Standard | Title | Replaces | Withdrawal Date |
| 1 | IS 1531:2025 | Textiles: Blanketing Cloth (3rd Revision) | IS 1531:1993 | 26 Feb 2026 |
| 2 | IS 1670:2025 | Yarn: Breaking Force & Elongation (3rd Revision) | IS 1670:1991 | 26 Feb 2026 |
These changes aim to enhance quality control and reliability in the textile sector.
Strengthening Water Quality Standards
A major highlight of the notification is the addition of new standards for microbiological water testing. These are based on ISO guidelines and will significantly improve the detection of pathogens and the reliability of testing in India.
| Standard | Based on ISO | Subject |
| IS 19200:2025 | ISO 15553:2006 | Detection of Cryptosporidium & Giardia |
| IS 19333 (Part 1):2025 | ISO 16266:2006 | Detection of Pseudomonas aeruginosa (Membrane Method) |
| IS 19333 (Part 2):2025 | ISO 16266-2:2018 | Detection of Pseudomonas aeruginosa (MPN Method) |
| IS 19338:2025 | ISO 29201:2012 | Variability & Uncertainty in Microbiological Methods |
| IS 19342:2025 | ISO 17995:2019 | Detection of Thermotolerant Campylobacter spp. |
| IS 19352:2025 | ISO/TS 12869:2019 | Legionella detection via qPCR |
These standards are particularly crucial for public health, drinking water safety, and industrial water use.
Food Chain Microbiology Standards
In addition, BIS has released new standards to enhance food safety and quality assurance in India’s food and agriculture sector.
| Standard | Based on ISO | Subject |
| IS 18349 (Part 2):2025 | ISO 15213-2:2023 | Enumeration of Clostridium perfringens |
| IS 18349 (Part 3):2025 | ISO/TS 15213-3:2024 | Detection of Clostridium perfringens |
| IS 19353:2025 | ISO/TS 17728:2015 | Sampling Techniques for Food & Feed Microbiology |
These standards will help strengthen microbial testing across food processing, storage, and agricultural practices.
Transition Timeline
- All new standards will be applicable from 26th August 2025.
- Existing textile standards IS 1531:1993 and IS 1670:1991 will remain valid until 26th February 2026, after which they will be officially withdrawn.
With these revisions, BIS continues its efforts to align Indian testing protocols with global standards. The updates are expected to improve consumer safety, industrial quality assurance, and international trade compatibility.
Date : 21 September 2025 Time : 10 AM to 5 PM Fee : Rs. 1180
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