The HYV Hydration Journal
Everything You Need to Know About Drinkware
Buying guides, honest comparisons, care tips, and hydration science — written by the people who obsess over bottles.
2
Articles
6
Topics
Jun 2026
Last updated
18/8 stainless steel
HYV
Materials
What Is 18/8 Stainless Steel in Water Bottles? Grade 304 Explained
What 18/8 stainless steel means for water bottles — Grade 304 composition, food safety, how it compares to 18/10 and 201 grades.
HYV
Comparison
Surgical Grade vs Food Grade Stainless Steel: What Your Water Bottle Actually Uses
Surgical grade (316) vs food grade (304) stainless steel for water bottles — why Grade 304 is the correct standard and why BIS certification matters more than grade claims.
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