IS 17526 : 2021
Domestic Stainless steel vacuum flask/bottle
1. Summary about Domestic Stainless Steel Vacuum Flask/Bottle
Domestic stainless steel vacuum flasks and bottles use double-wall vacuum insulation to maintain the temperature of beverages. Stainless steel construction provides corrosion resistance and long service life.
2. Why BIS Certificate is Mandatory for Domestic Stainless Steel Vacuum Flask/Bottle
BIS certification is mandatory to ensure food-contact safety, insulation performance, and structural reliability. Poor-quality products can pose health and safety risks.
3. What is BIS Certified for Domestic Stainless Steel Vacuum Flask/Bottle
BIS certification verifies compliance with Indian Standards covering thermal performance, material safety, leak-proof construction, and durability.
Tests required for Domestic Stainless Steel Vacuum Flask/Bottle
| Title | Mandatory/Optional |
|---|---|
| Manufacture and Workmanship | Required |
| Welding Defects | Required |
| Welding Electrode | Optional |
| Material | Optional |
| Minimum Thickness of Outer Container | Required |
| Coating Thickness | Required |
| Salt Water Corrosion Test | Optional |
| Adhesion Test | Optional |
| Lead Limit | Optional |
| Cadmium Limit | Optional |
| Arrangement for Holding and Suspension | Required |
| Heat Retention Capability ( 1hour) | Required |
| Heat Retention Capability (6 hours & 12 hours) | Required |
| Heat Retention Capability (24 hours) | Required |
| Cold Retention Capability | Required |
| cold Retention Capability (6 hours & 12 hours) | Required |
| cold Retention Capability (24 hours) | Required |
| Drop Impact | Optional |
| Pendulum Impact | Optional |
| Fixing Strength of Handle | Optional |
| Test for Strength of Shoulder Strap | Required |
| Test for strength of Shoulder Strap/Cord | Optional |
| Leakage Test | Required |
| Joint Leak Test | Required |
| Staining Test | Required |
| Pour Test | Required |
| Endurance Test for O-Ring, Stopper and Washer | Optional |
| Test for leaching | Optional |
| Sensorial test | Optional |
4. Benefits of BIS Certification for Domestic Stainless Steel Vacuum Flask/Bottle
- Ensures hygienic and safe beverage storage
- Mandatory for compliant consumer sale
- Improves thermal insulation efficiency
- Enhances product durability
- Increases buyer confidence