Janoshik Analytical — what its reports establish
Janoshik Analytical: Chromatographic purity and mass-spectrometric identity on submitted samples. What a report from this service does and does not establish, and how we cite it.
Scope
Janoshik Analytical — Chromatographic purity and mass-spectrometric identity on submitted samples.
This page describes how this community reads and cites reports from this service. It is not an assessment of the service and we have no relationship with any of the four we cite.
What a report contains
The laboratory most frequently cited in this community's verification records. Reports are issued with the analytical method stated and a chromatogram included, which is the property that makes a result usable as evidence rather than as an assertion.
Submission is by post. What arrives back is a purity figure with a method, and an identity confirmation where requested. A purity-only report does not address content, counter-ion form, endotoxin or sterility, and none of those are failures of the service — they are separate tests that were not ordered.
For our purposes the important discipline is stating what was requested alongside the result. A vendor page entry that says "99.1%" without saying which assay produced it is not a record.
How we cite it
On a vendor documentation page, an entry citing this service records: the compound, the lot identifier, the date, the method as reported, the result, and the state — verified, unverified or disputed. An entry missing any of those is incomplete and gets moved to the discussion rather than the record.
"Unverified" means the available material did not contain enough to check. It is not a negative finding about a product, and we use that wording deliberately.
Limits
One service, one laboratory, one vial, one date. Agreement between two independent services on the same lot is a much stronger statement than a single high number, and our records mix services for exactly that reason.
None of these services can tell you whether something is safe to use. That is a different question and it is not an analytical one.
Revision history
| 2026-04-23 | unit_conversion | Corrected a unit label in the second table — it read mg where it should have read mg/mL. |
| 2026-03-09 | ms_holloway | Added the worked example that the review thread asked for. |
| 2025-12-25 | sourced_claims | Recorded a dissent from one maintainer rather than resolving it silently. |
| 2025-09-27 | j.delacroix | Added cross-references to the two topics that most often ask this question. |
| 2025-06-02 | hana.sato | Split an overlong section in two and gave the second a proper heading. |
| 2025-05-01 | r.venkatesan | Initial promotion from the source topic. Structure taken from the marked solution. |
Every edit to a maintained document records its author and a note explaining the change. An edit without a note may be reverted by any wiki editor under R9, and the revert is logged. Disagreements about content belong on the source topic rather than in the revision history (R10).
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