Catalogue / Analysis

How every batch is tested

Purity is a measurement, not an adjective. Here is exactly what we measure, how, and what you receive with the pen.

What we run

Test	Method	What it establishes
Purity	Reverse-phase HPLC	The proportion of the sample that is the stated compound, reported to one decimal place.
Identity	Mass spectrometry	That the compound present is the compound stated, by molecular mass.
Appearance	Visual, at fill	Solution clarity and cartridge integrity before dispatch.

What you receive

Each order ships with the certificate of analysis for the specific batch in the box. The batch number on the certificate matches the batch number on the pen. If those two do not match, tell us and we will replace the order.