IS 17526:2021 is India’s Bureau of Indian Standards (BIS) code for stainless steel vacuum insulated bottles. It defines material grade requirements (food-grade steel), insulation performance (thermal retention over time), leak-proof testing, and corrosion resistance. Certification to IS 17526:2021 is now mandatory for domestic vacuum bottles in India.
Key Facts
- IS 17526:2021 is India’s national standard for stainless steel vacuum insulated bottles.
- It tests material safety, thermal performance, leak-proofing and corrosion resistance.
- Certification is mandatory for domestic vacuum bottles sold in India.
- HYV bottles are BIS certified to IS 17526:2021.
- The BIS mark should be visible on the packaging or the bottle base.
What the standard tests
- Material: food-grade stainless steel (typically 304 grade).
- Thermal performance: temperature retention across a defined timeframe.
- Leak-proofing: standardised leak tests.
- Corrosion resistance: chemical exposure over time.
Why it matters
Without a standard, "insulated" is a marketing claim. With BIS certification, an independent lab has verified the bottle meets published thresholds.
How to verify
Look for the BIS mark on the bottle or packaging, or check the certification database on the BIS website. HYV bottles carry the mark on the base.
Frequently Asked Questions
Is BIS certification mandatory for water bottles?
For domestic stainless steel vacuum insulated bottles in India, yes.
What year is the current BIS standard?
IS 17526:2021 — the 2021 revision is current.
Are imported bottles BIS certified?
Not always. Import restrictions require BIS certification for many categories.
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