Trust shouldn't be a feeling. It should be a document. Every Arka batch is tested by an independent laboratory, and that test produces a certificate of analysis — a COA. Here's how to make sense of one.
What a COA tells you
A certificate of analysis lists what was tested, the method used, the result, and the limit that result must stay under. If the result sits below the limit, the batch passes. Simple in principle — the rigour is in what you choose to test for.
What we screen for
Botanicals draw up whatever is in their soil and water, which is why purity testing matters so much for plant-based products. We screen every batch across four families of contaminant:
- Heavy metals — lead, arsenic, cadmium, mercury.
- Pesticides — residues from cultivation.
- Microbials — yeast, mould, and harmful bacteria.
- Potency — confirming the active is present at the dose claimed.
Zero-contaminant isn't a tagline. It's a threshold a batch either clears or doesn't.
Stricter than required
Where regulations set a ceiling, we aim well below it. A limit is the most that's permitted — not a target. Our internal thresholds are tighter than the legal ones, because 'allowed' and 'ideal' are not the same word.
If a batch doesn't clear our standard, it doesn't ship. That's the whole promise, and it's a short one.
- Result below limit = pass.
- We test heavy metals, pesticides, microbials and potency.
- Our internal limits are stricter than the legal minimums.
- A certificate of analysis is available on request.



