COA Spec Checker — privacy

What this tool does

COA Spec Checker is a local document-review tool. It compares values you paste from a certificate of analysis against specification limits you define, and calculates a production-batch total adjusted for purity.

Chrome extension: no data leaves your browser

The Chrome extension has no permissions, makes no network calls, and never reads the pages you visit. There is no account, no analytics, and no tracking in the extension.

• Specification limits and the last batch inputs you enter are stored in your browser's local storage so they persist between sessions. Pasting or typing values does not upload them anywhere.
• You can clear stored values at any time by removing the extension or clearing its data.

Website version: standard site analytics

This page runs on PeptideSuppliers.tech, which loads Google Analytics and Google Ads tags on every page to measure page views and site usage. Those tags are operated by Google and may set cookies and collect standard analytics data (such as pages visited, approximate location, and device type). This is separate from the calculator itself: the values you paste into the calculator are processed in your browser and are not sent to those tags.

Local storage on this page

On the website version, the COA values you paste, your specification limits, and your batch inputs are saved in your browser's local storage so the tool restores your last session. They are stored only on your device and are not transmitted to our server.

No selling of data

We do not sell personal data. Analytics data is used for standard site measurement and improvement.

Not medical or safety guidance

This tool performs arithmetic on numbers you supply. It does not provide dosing, medical, or safety advice, and it does not interpret lab results on your behalf.

Changes

If this policy changes, the date above will be updated and changes will be described here.

Contact

Questions: hello@peptidesuppliers.tech