Full stated quantity, and nothing rounded up — purity by HPLC and the Cu : peptide molar ratio by ICP-MS, measured and transcribed on a lot-numbered COA for every batch.
Full stated quantity; HPLC purity and Cu : peptide ratio by ICP-MS — measured, not rounded; per-lot COA.
Full quantity; purity + Cu : ratio, not rounded.
Why Cu²⁺ : Peptide Ratio Matters — A 90-Second Quality Check for Formulators. Read our briefing →
Why Cu²⁺ Ratio Matters — a field guide. Read →
On the Cu²⁺ ratio. Read →
Legal
What cookies and similar technologies we use, why we use them, and how to control them.
Effective date: May 16, 2026
A cookie is a small text file a site stores on your device (computer, tablet, phone) when you visit — it lets the site recognize your device next time, remember a preference, secure your session, and, where you permit it, measure use in aggregate. Related technologies (local storage, session storage, web beacons, pixel tags) do similar jobs and are covered here too.
We keep this deliberately light. Some cookies are ours (first-party); a few belong to service providers we use (third-party), and every one of those is named in the table below with its provider and purpose. Because our audience is professional B2B buyers and our measurement is strictly anonymized, the Site loads only strictly-necessary and functional cookies by default — everything else is opt-in.
We group them into four kinds:
Strictly necessary — needed for the Site to work at all: secure routing, session integrity, language detection, and remembering that you dismissed the announcement bar. Our preference controls cannot switch these off because the Site depends on them.
Functional — remember a preference such as your locale so the Site behaves consistently between visits. Helpful, not essential.
Analytics — help us understand use in aggregate. We run Google Analytics 4 with IP truncation (anonymize_ip), no PII passed, and advertising cookies disabled, alongside cookieless Vercel Analytics. You can block both in your browser.
Marketing / advertising — none. We run no advertising or retargeting here and set no marketing cookies. If that ever changes, we will update this policy and show a consent banner before any marketing tag loads.
The table below lists the cookies and similar technologies currently used on the Site, including names that may be set if you opt in to analytics. We refresh it whenever we change a provider or add or remove a tag.
| Cookie / key | Provider | Purpose | Duration | Type |
|---|---|---|---|---|
| cupratec_announcement_dismissed | Cupratec (first-party) | Remembers that you have dismissed the top announcement bar. | 30 days | Strictly necessary |
| cupratec_locale | Cupratec (first-party) | Remembers your preferred language when multi-language is enabled. | 1 year | Functional |
| _vercel_* | Vercel (Vercel Inc., USA) | Edge routing, deployment protection, anti-abuse. Cookieless analytics where possible. | Session up to 1 year (varies by sub-cookie) | Strictly necessary |
| _ga, _ga_* | Google Analytics (Google LLC, USA) | Aggregate visitor counts, sessions, traffic sources, and engagement events. Anonymized IPs. | Up to 24 months | Analytics |
We update this table when we change providers, add or remove tags. Some cookies (e.g. Google Analytics) load only after explicit opt-in.
Strictly-necessary and functional cookies are set without consent, because they either run the Site or deliver a feature you have explicitly asked for (such as remembering your language).
Analytics and any future marketing cookies load only after you give affirmative, opt-in consent through a consent banner. You can withdraw consent at any time via the consent-management link in the footer (when shown) or by clearing your cookies.
For visitors in the European Economic Area, the United Kingdom, or jurisdictions with similar rules, no analytics cookies load unless you have actively opted in.
We respect the Global Privacy Control (GPC): if your browser sends GPC, no analytics or marketing cookies are set even after consent.
On Do-Not-Track (DNT): there is no agreed standard for how sites should answer a DNT signal, but in line with current best practice we treat one as a withdrawal of consent for analytics and marketing cookies.
If Google Analytics is enabled and you have opted in, you can later opt out with Google's official Analytics opt-out browser add-on, or by clearing the _ga / _ga_* cookies.
Most browsers let you view, block, or delete cookies. The steps vary; these are the main help pages:
Blocking strictly-necessary cookies may break parts of the Site. Blocking analytics or marketing cookies does not affect how the Site works — it only removes you from our aggregate measurement.
We may update this policy when we add or remove cookies, change a provider, or respond to a regulatory change; the effective date at the top reflects the latest revision.
Questions about cookies? Write to info@cupratec.com with the subject "Cookies".