test documents · updated february 2026

Every batch comes with paperwork. Here it is.

Most supplement brands never show you a test result. We think that’s the whole argument, so this page holds ours — including the parts that aren’t finished yet.

A Certificate of Analysis is the document a mineral supplier issues for a specific batch: what the material is, how much elemental mineral it contains, and whether it passed the purity and microbial limits in their specification. Ours is below.

magnesium bisglycinate · supplier certificate

What it shows
Open the PDF
Elemental magnesium
20.71%
spec ≥20% · pass
Purity screen
Passed
heavy metals within spec
Microbial screen
Passed
E. coli, salmonella negative
Form
Bisglycinate
chelated magnesium

What this certificate is, and isn’t

what it covers

The identity of the raw magnesium we buy
Its elemental magnesium content, against a stated specification
Heavy-metal and microbial results, against that specification
The specific batch it was issued for

what it doesn’t

It is the supplier’s own testing, not an independent lab’s
It tests the ingredient, not our finished capsules
It says nothing about health outcomes — no test can
We’d rather tell you that than let “lab tested” do work it hasn’t earned.

next

Independent testing of the finished capsules at a UK laboratory, from the next production run. When those results exist, they’ll be published here alongside the ingredient certificates — pass or fail.

questions

If something on the certificate doesn’t make sense, email hello@walruscore.com and we’ll walk you through it. If you want a copy for a specific batch, tell us the lot number on your bottle.