Testing and documentation
What we test, and where to read it
Every lot we ship has a page on this site. Not a PDF you request — a page, with the panel it was run against and the results, dated.
The panel
The panel every production lot is run against:
| Test | Reported as |
|---|---|
| Sterility | Pass or fail, with the test date |
| Bacterial endotoxin | Measured value, with the test date |
| Benzyl alcohol concentration | Measured value against a target of 0.9% |
| pH | Measured value, with the test date |
| Appearance | Clear, colourless, free of visible particulate |
Testing is performed at an independent laboratory. No lot has published results on this site yet. Results are posted to the lot library as testing completes, each tied to its lot and its test date. The lot library is here.
How we phrase results, and why
We write test results in the past tense, tied to a named lot: Lot 2608-A14 was tested for sterility, endotoxin and preservative concentration on 12 August 2026. (An illustration of the wording, not a published result.)
We don’t write “every vial is guaranteed sterile.” A test is evidence about the lot that was tested, on the day it was tested. Anything phrased as a forward promise about lots that don’t exist yet is marketing, not data — and in a category where the product is chemically identical across every supplier, the phrasing is most of what distinguishes them.
Container and closure
Type I borosilicate glass, bromobutyl rubber stopper, aluminium crimp seal, tamper evident. Glass and crimp are not a preference — a plastic container or a screw closure on a multi-dose reagent is the clearest signal you’re not looking at the product you think you are.
Testing questions
What is measured, who measures it, and what a result does and does not entitle us to claim.
Is a certificate of analysis included, and do I have to ask for it?
It is published rather than sent on request. Every production lot gets a page on this site carrying the panel it was run against, the results, the date of each test, and the COA itself as a downloadable document.
No lot has published results on this site yet. Results post to the lot library as testing completes, each tied to its lot code and its test date. We would rather show an empty index than a certificate that is not attached to a lot you can actually receive.
What is a COA, and what does yours contain?
A certificate of analysis is the laboratory’s own document for a single lot: the tests run, the methods used, the results and the dates.
Ours is published as the document itself rather than as a summary we typed out on a page. The difference matters — a summary is a supplier’s account of a test, and a COA is the laboratory’s. A certificate that is not tied to a lot code you can find on a carton is not doing the job a certificate exists to do.
Who runs the testing, and why don’t you name the laboratory?
An independent laboratory. We do not publish its name.
A lab name is not a result. It is not something a buyer can independently verify, and publishing it creates pressure on a third party who did not agree to be part of our marketing. What you can check is the thing that actually carries information: the measured result, the date it was measured, and the lot code it belongs to — all three on the same page, in the lot library.
Is the 0.9% benzyl alcohol a formulation target, or is it measured?
Both. 0.9% is the formulation target, and benzyl alcohol concentration is measured per lot and reported as a measured value against that target.
Reported as a number rather than as “conforms,” which is the more common phrasing and tells you strictly less. The preservative is the entire reason this is a multi-dose presentation rather than a single-use one, so it is the specification least worth taking on trust. The full specification.
Do you guarantee that every vial is sterile?
No, and a supplier who does is claiming something a test cannot support.
A sterility test is evidence about the lot that was tested, on the day it was tested. We state results as what a named lot was tested for and what was found, in the past tense, and we make no claim about lots that have not been filled or tested. What we do warrant is narrower and checkable: that at dispatch the product conforms to the specification published for its fill size and to the test results published for its lot. What we warrant, and your remedy.
Where is it filled, and why won’t you say more than that?
Our US facility. We describe it that way deliberately and do not name or locate it further.
Naming a fill site publicly creates problems for the site and gives a buyer nothing they can verify — you cannot audit a name on a web page. The verifiable part is the documentation, which is why it is public and why every lot gets a page rather than a PDF on request. More on that policy, and who operates the business.
Can I get documentation for a lot I have already received?
Find the lot code on your carton and open its page. The panel and the COA are on it.
Nothing is removed from the archive after a lot sells through, so a lot bought years ago keeps its page for as long as anyone might need to file the paperwork. If a lot page does not carry what you need, ask us and we will get it to you.
For research use only. Not for human or veterinary use. Not a drug, supplement or medical device.