SigmaStacks
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Certificates are published per lot as assays complete. Email us with the lot number on your vial for any lot not yet posted.

Privacy Policy

Last updated: August 2026.

This website is operated by Sigma Stacks, LLC ("SigmaStacks"), which is responsible for the personal information described below.

What we collect

Contact and shipping details you provide at checkout (name, email, shipping address), your order history, and standard, privacy-respecting website analytics.

Why we collect it

To process and ship your orders, provide support, prevent fraud, and improve the store.

Payments

Payments are handled by a third-party payment processor. We never see or store your full card number or payment credentials — they are sent directly to the processor. We retain only the transaction reference and amount, as needed for order fulfillment and recordkeeping.

Analytics & cookies

We use privacy-respecting analytics. A cookie/consent notice governs any optional tracking. If you arrive through a partner referral link, a first-party cookie remembers which partner referred you for 30 days; it contains only the referral code, no personal information, and is never shared with anyone.

SMS & mobile information

No mobile phone information will be shared with third parties or affiliates for marketing or promotional purposes. Any text messaging consent is not shared with third parties.

How we share data

We share data only with the service providers needed to fulfill your order (for example shipping, email, and analytics providers) and as required by law. We do not sell your personal data.

Your rights

Subject to applicable law (including CCPA and, where relevant, GDPR), you may request access to or deletion of your personal data by emailing [email protected].

Retention

We retain order records as required for tax, accounting, and legal compliance.

Age

This site and its products are intended only for persons 21 years of age or older.

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