**Executive Summary**
This notification, issued by the Bureau of Indian Standards (BIS) on March 25, 2026, announces Amendment No. 1 to three specific Indian Standards concerning arsenic determination, air pollution measurement, and caustic potash specifications. Established under the BIS Rules 2018, these amendments came into effect on March 25, 2026. A transition period is provided, allowing the original standards to remain valid without these amendments until September 24, 2026.
**Key Points / Main Content**
**Regulatory Authority**
* The notification is issued in pursuance of Sub-rule (1) of Rule (15) of the Bureau of Indian Standards Rules, 2018.
* It is published under the authority of the Department of Consumer Affairs.
**Specific Standards Amended**
* **IS 2088 : 2023:** Methods for Determination of Arsenic (Third Revision) – Amendment No. 1.
* **IS 5182 (Part 2/Sec 1) : 2023:** Methods for Measurement of Air Pollution (Part 2 Sulphur Dioxide, Section 1 Tetrachloromercurate/Pararosaniline Method, Second Revision) – Amendment No. 1.
* **IS 6831 : 2023:** Caustic Potash — Specification (Third Revision) – Amendment No. 1.
**Implementation Schedule**
* **Establishment Date:** All listed amendments were established on March 25, 2026.
* **Transition Period:** The previous versions of these standards (without the amendments) remain in force for six months, expiring on September 24, 2026.
**Impact Analysis**
**Industrial Manufacturers and Testing Laboratories**
**Impact**
Organizations using these specific standards for arsenic testing, air quality monitoring (Sulphur Dioxide), or caustic potash production will need to align their processes with the new technical requirements introduced by Amendment No. 1.
**Action Required**
Stakeholders must review the specific changes in Amendment No. 1 for their relevant standard and update their testing methodologies, quality control protocols, or manufacturing specifications before the September 24, 2026 deadline.
**Regulatory and Certification Bodies**
**Impact**
Entities responsible for auditing and certifying compliance with Indian Standards are affected by the updated criteria for arsenic determination, air pollution measurement, and chemical specifications.
**Action Required**
Certifying officers and auditors must apply the updated standards during inspections and ensure that all certifications issued or renewed after the transition period reflect the requirements of the amendments.
Key Entities Referenced
Bureau of Indian Standards (BIS): The national standards body of India responsible for establishing and notifying amendments to technical standards.
Bureau of Indian Standards Rules, 2018: The legal framework under which Rule 15 provides the authority to notify amendments to established Indian standards.
IS 2088 : 2023: The Indian Standard for 'Methods for Determination of Arsenic' which has been updated via Amendment No. 1.
IS 5182 (Part 2/Sec 1) : 2023: The Indian Standard for 'Methods for Measurement of Air Pollution (Sulphur Dioxide)' updated via Amendment No. 1.
IS 6831 : 2023: The Indian Standard providing specifications for 'Caustic Potash' updated via Amendment No. 1.
रजिस्ट्री स.ं डी.एल.- 33004/99 REGD. No. D. L.-33004/99
सी.जी.-डी.एल.-अ.-28032026-271375
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CG-DL-E-28032026-271375
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असाधारण
EXTRAORDINARY
भाग III—खण् ड 4
PART III—Section 4
प्राजधकार स ेप्रकाजित
PUBLISHED BY AUTHORITY
स.ं 223] नई दिल्ली, िुक्रिार, माच च27, 2026/चत्रै 6, 1948 ष 22, 1947
No. 223] NEW DELHI, FRIDAY, MARCH 27, 2026/CHAITRA 6, 1948 s 1947
भारतीय मानक ब्य रू ो
(उपभोक्त ा मामल ेजिभाग)
अजधसचू ना
नई दिल्ली, 25 माच,च 2026
सिं भ:च HQ-PUB015/1/2020-PUB-BIS (1507).— भारतीय मानक ब्यरू ो जनयम, 2018 के जनयम 15 के
उपजनयम (1) के अनुसरण म ें भारतीय मानक ब्यूरो एतिद्वारा अजधसूजचत करता ह ै इसम ें संलग्न अनूसूची में दिय े गय े
मानकों में संिोधन दकये गय ेह|ैं
अनुसूची
क्रम स्ट्थाजपत भारतीय मानकों की सख्ं या, िष च सिं ोधनों की सख्ं या सिं ोधनों की जतजथ िब तक मानक
स.ं एिं जतजथ प्रजतस्ट्थापन जतजथ तीसरे स्ट्तंभ म ेंइंजगत
तथा िीषकच
सिं ोधन के जबना भी
लाग ूरहगे ा
(1) (2) (3) (4) (5)
1 आई एस 2088 : 2023 संशोर्ि संख्यध 1 25 मधर्ा 2026 24 नसतंबर 2026
आसेनिक के निर्धारण के तरीके मधर्ा 2026
(तीसरध पुिरीक्षण)
2258 GI/2026 (1)2 THE GAZETTE OF INDIA : EXTRAORDINARY [PART III—SEC.4]
2 आई एस 5182 (भधग 2/अिुभधग 1) : 2023 संशोर्ि संख्यध 1 25 मधर्ा 2026 24 नसतंबर 2026
वधयु प्रदषू ण को मधपिे के तरीके मधर्ा 2026
भधग 2 सल्फ र डधइऑक् सधइड
अिुभधग 1 टेट्रधक्लोरोमक्युारट/पैरधरोसिीनलिे नवनर्
(दसू रध पुिरीक्षण)
3 आई एस 6831 : 2023 संशोर्ि संख्यध 1 25 मधर्ा 2026 24 नसतंबर 2026
कधनटटक पोटधश — नवनशनि मधर्ा 2026
(तीसरध पुिरीक्षण)
जचत्रा गुप्ता, िैज्ञाजनक िी एिं उप महाजनिेिक (हॉलमार्किंग एिं रेननंग)
[जिज्ञापन-III/4/असा./799/2025-26]
BUREAU OF INDIAN STANDARDS
(Department of Consumer Affairs)
NOTIFICATION
New Delhi, the 25th March, 2026
Ref: HQ-PUB015/1/2020-PUB-BIS (1507).— In pursuance of Sub-rule (1) of Rule (15) of the Bureau of
Indian Standards Rules, 2018, the Bureau of Indian Standards hereby notifies that Amendments to Indian standards,
particulars of which are given in schedule hereto annexed have been established.
SCHEDULE
Sl No., Year & Title of the Indian No. and Date of Date till which
No. Standard Month/Year of the Establishment of the the standard
Amendment Amendment without the
amendment as
mentioned in
column 3 shall
remain in force
(1) (2) (3) (4) (5)
1 IS 2088 : 2023 Amendment No. 1 25 March 2026 24 September
Methods for Determination of March 2026 2026
Arsenic
(Third Revision)
25 March 2026 24 September
2 IS 5182 (Part 2/Sec 1) : 2023 Amendment No. 1 2026
Methods for Measurement of Air March 2026
Pollution
Part 2 Sulphur Dioxide
Section 1 Tetrachloromercurate/
Pararosaniline Method
(Second Revision)
25 March 2026 24 September
3 IS 6831 : 2023 Amendment No. 1 2026
Caustic Potash — Specification March 2026
(Third Revision)
CHITRA GUPTA, Scientist G & DDG (Hallmarking and Training)
[ADVT.-III/4/Exty./799/2025-26]
Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064
and Published by the Controller of Publications, Delhi-110054.