Frequently asked questions
Does copper really clean water from harmful germs and bacteria?
Yes — and it’s one of the oldest and most natural ways to do it. Multiple scientific studies have proven that storing water in copper vessels for several hours helps eliminate common harmful germs like E. coli, Salmonella, and Vibrio cholerae — all without using chemicals or filters. This is thanks to copper’s natural antimicrobial power, known as the oligodynamic effect, which allows it to kill or neutralize bacteria on contact. Trusted studies confirming this:
Copper doesn’t just store water — it makes it safer to drink, the way nature intended.
Can I use my copper bottle for drinks other than water?
Copper is a powerful natural material — but like all metals, it interacts with what you put inside it. For that reason, we recommend using your copper bottle exclusively for still water at room temperature.
What You Can Do
Use still, plain water — ideally filled and stored for 6–8 hours to allow copper ions to infuse
Drink from it throughout the day
Store water overnight to follow traditional practices like Tamra Jal (Ayurveda)
Rinse with clean water daily and dry completely after use
What You Should Avoid
Acidic drinks like lemon water, fruit juices, vinegar-based drinks — they can cause copper to leach excessively and affect taste
Hot liquids like tea, coffee, or boiled water — heat can increase reactivity and damage the bottle’s integrity over time
Carbonated drinks like soda or kombucha — the acids and carbonation can cause corrosion
Milk, alcohol, or herbal infusions — these don’t belong in copper containers and may spoil or react
How should I clean and care for my copper vessel?
Daily rinse with warm water and gentle soap
Dry completely with a soft towel to prevent stains
Weekly polish naturally using lemon and salt, vinegar and salt, or baking soda paste
For occasional deep cleaning, fill the bottle with warm water and add lemon juice (or vinegar) with salt, let sit for 15–20 minutes, then rinse and dry
Avoid dishwashers, bleaches, or scrubbers — these can damage the copper’s surface and shine
Will the bottle change colour over time?
Yes. Copper naturally develops a soft, matte finish called patina — a result of exposure to air and water over time. This is not a flaw, but a sign of authenticity and purity.
If you prefer the original shine, you can polish it occasionally. Or simply let it age — gracefully and beautifully — just like the ritual it holds.
Is your copper drinkware truly pure copper?
Yes — our vessels are made from 99.7–99.9% pure, food-grade copper, which is the highest practical purity for drinkware. While 100% copper isn’t feasible to shape into bottles, this quality ensures full contact with copper’s natural properties—no alloys, coatings, or lining.
This purity level is what's used by trusted brands and labs—and it’s essential for delivering the genuine copper experience your body and bottle deserve.
Is your packaging eco-friendly?
Yes. Every Nira Earth bottle is shipped in 100% recyclable, plastic-free packaging. Our design philosophy is rooted in sustainability—from product to presentation.
Are Nira Earth bottles leakproof?
Yes. Our handcrafted bottles come with food-safe leakproof caps. You can carry them in your bag with confidence.
Do your bottles fit in car cup holders?
Yes. Our standard and tall bottles are designed to fit most universal car cup holders.
Are your bottles handmade?
Yes. Each bottle is handcrafted by artisans using age-old techniques. Slight variations are expected and celebrated—they make each piece unique.
Do you offer co-branded or bulk corporate gifting?
Yes. We offer customized gifting solutions for businesses—sustainably packaged, beautifully crafted, and designed to leave an impact. Get in touch via our Gifting page.
Why don't you offer insulated copper bottles?
We believe in copper’s natural benefits. Insulated bottles can trap moisture between walls, risking mold buildup. Also, Ayurveda recommends room-temperature water, not cold. Simplicity wins here.
What water should I use?
Tap, filtered, or spring water—anything you normally drink. Let it rest in the bottle overnight to allow copper ions to infuse fully.
How do I know it’s real copper?
Pure copper darkens and develops patina. If your bottle stays shiny for months with no change—it’s probably coated. We use no interior lacquers.
Can I return or exchange a bottle?
Yes. We offer a 100% satisfaction guarantee. We do offer return & exchanges within 14 days in original condition.
Do you ship internationally?
Yes, we ship worldwide. Shipping times vary by location.
Do you ship internationally?
Yes, we ship worldwide. Shipping times vary by location.
