Every vial we ship carries a batch number. That number ties what is in your hand back to the analysis of the material it came from. This page explains what that analysis covers, what it proves, and what it does not.

Why analytical testing matters

A lyophilised powder in a sealed vial looks identical whatever it is. You cannot tell a compound apart from a near neighbour, or from a diluted version of itself, by looking at it. The only way to know what a batch contains is to put a sample of it through an instrument that separates and identifies what is there.

That is the whole argument for batch documentation. Not marketing, not a promise, just a record of what a laboratory found when it looked.

How a batch is identified

A batch is a single quantity of material produced in one run. Everything drawn from it shares one identity, so it is tested once and the result applies to every vial filled from it.

Each Amino Crew batch is given a number in the format AC-000000, printed on the vial label. Quote that number and we can tell you exactly which analysis applies to the material you hold. A product name alone cannot do that, because two batches of the same compound are different material.

What a Certificate of Analysis shows

A Certificate of Analysis, usually shortened to COA, is the laboratory’s report on one batch. A useful one answers four questions.

Identity	Is this compound the one named on the label? Usually answered by mass spectrometry, which measures molecular weight and compares it to the expected value.
Purity	What proportion of the sample is the target compound? Usually answered by HPLC, which separates a sample into its components and measures the size of each.
Quantity	How much compound is actually in the vial, as opposed to how much the label claims.
Provenance	Which batch was tested, on what date, by which laboratory, using which method.

A report without the fourth of those is close to worthless. A purity figure with no batch number and no date cannot be tied to anything.

Purity and quantity are different questions

These get confused constantly, and the difference matters.

Purity is a proportion. It says that of the material present, some percentage is the target compound and the rest is something else. It says nothing about how much material is in the vial.

Quantity is an absolute amount. A vial can be 99% pure and still contain half of what the label claims. Purity would look excellent and the vial would still be wrong.

This is why a purity number quoted on its own, with no quantity result beside it, is a weaker claim than it appears.

What 99% actually means

A purity result is produced by a specific method, on a specific sample, on a specific date. It means that under those conditions, the instrument attributed that proportion of the detected material to the target compound.

It does not mean the remaining 1% has been identified, unless the report says so. It does not describe anything the method cannot detect. And it describes the material as it was on the day of testing, not after it has been shipped, stored or reconstituted.

The limits of a COA

We would rather be straight about this than let a document do more work than it can carry.

• A COA is an analytical record. It is not a safety assessment and not a statement of fitness for any purpose.
• It describes a sample of a batch, not the individual vial in front of you.
• It reflects the day it was tested. Storage and handling after that are outside its scope.
• It cannot report on anything the chosen method does not detect.
• No analytical result makes a research compound suitable for human or veterinary use, and nothing here should be read as suggesting otherwise.

Getting the documentation for your batch

Enter your batch number on the batch verification page, or email aminocrew@proton.me with your order number and the batch number from the vial. We send the report as the laboratory issued it, unedited.

If you believe a compound does not match its documentation, tell us and quote the batch number. We would rather refund an order and investigate a batch than argue about it. That is set out on our returns page.