Third-party lab verified
Pure copper. Certified.
We don't just claim purity — we prove it. Every Cupreva bottle is independently tested by an ISO/IEC 17025 accredited laboratory before it reaches you.
99.7%
Copper purity
<0.01%
Lead detected
NATA
Accredited lab
ISO
17025 certified
30-day money-back guarantee
Free shipping in US & Australia
Full report available on request
Copper purity at a glance
Copper (Cu) content
99.7%
99.7% Cu
0%
Minimum grade
95% Food safe
99% 100%
95% Food safe
99% 100%
Cu
Copper
99.7%
Pb
Lead
<0.01%
Safe
Fe
Iron
0.01%
Safe
Zn
Zinc
0.70%
Safe
As
Arsenic
<0.01%
Safe
Ni
Nickel
<0.01%
Safe
Sb
Antimony
<0.01%
Safe
Cr
Chromium
<0.01%
Safe
Cupreva vs generic copper bottles
Cupreva
Purity tested Yes
Lead content<0.01%
Arsenic None detected
Lab accredited NATA / ISO 17025
Report public Yes
Money-back 30 days
Generic brands
Purity tested Rarely
Lead contentUnknown
Arsenic Not tested
Lab accredited Typically no
Report public No
Money-back Varies
How we test
Batch sample selected
Step 1
Sent to LMATS lab
Step 2
OES analysis performed
Step 3
Certified report issued
Step 4
Shipped to you
Step 5
Why copper purity matters
Storing water in copper vessels — a practice rooted in Ayurvedic tradition — is only beneficial when the copper is pure. Impurities like lead or arsenic can leach into water and cause harm. At 99.7% purity with zero detectable lead or arsenic, Cupreva bottles are crafted specifically to honour this ancient practice safely and effectively.
Official lab report
LMATS Chemical Analysis Report — LS25-2316-01 CA Rev. 1
LMATS Pty Ltd
Laboratories for Materials Advanced Testing Services
Approved tester
Rachel Dallmann, Analytical Chemist
Test method
TP-CT-02 — Chemical analysis OES
Equipment
OES Desktop Ametek LM05
Accreditation
NATA no. 15840
Report date
19 June 2025
Standard
ISO/IEC 17025 — Testing
NATA accredited
ISO/IEC 17025
ilac-MRA signatory
What our customers say
"The lab report was the reason I bought. Finally a copper bottle brand that shows actual proof — not just claims. The quality is stunning too."
"I was sceptical about copper bottles after reading about impurities. Seeing the actual NATA-certified test results changed everything for me."
"99.7% pure copper — that's not marketing, that's science. I've recommended Cupreva to everyone in my wellness community."
"Beautifully made and backed by real science. The hammered finish looks gorgeous and knowing it's lab-certified gives me total peace of mind."
Common questions
Is Cupreva copper safe for daily drinking?
Yes. Our copper is tested at 99.7% purity with lead below 0.01% and zero detectable arsenic — the two elements most associated with copper water safety concerns. The test was conducted by LMATS, a NATA-accredited laboratory certified to ISO/IEC 17025.
What is OES testing?
Optical Emission Spectrometry (OES) is a highly precise analytical technique used to determine the exact elemental composition of a metal sample. It works by exciting atoms with energy and measuring the light spectrum they emit — each element produces a unique "fingerprint." It is the gold standard for metal purity analysis.
How often do you test your bottles?
We test each production batch independently before it is shipped. This means every bottle you receive comes from a tested and certified batch, not a one-time historical test.
Can I see the full lab report?
Absolutely. The full LMATS report (LS25-2316-01 CA Rev. 1) is available to download above. We believe in complete transparency — no redactions, no summaries, the actual certified document.
What if I'm not happy with my purchase?
We offer a 30-day no-questions-asked money-back guarantee. If you're not completely satisfied, contact us and we'll arrange a full refund — no hassle.
Drink pure. Drink confident.
Science-backed. Tradition-rooted. Beautifully crafted for everyday wellness.
30-day money-back guarantee ·
Free shipping ·
Lab certified
Shop the collection
Ships to United States & Australia · Secure checkout
Full certified report: LS25-2316-01 CA Rev. 1 · LMATS Pty Ltd · NATA accreditation no. 15840 · Issued 19 June 2025 · ISO/IEC 17025 accredited testing