Frequently asked questions
What are the materials described on this website intended for?
All products are strictly for laboratory research use and are not intended for use in humans or animals.
What does the stated purity figure show?
The purity figure comes from an HPLC analysis and describes the area share of the main component in the chromatogram relative to minor components.
How is the identity of a material confirmed?
Identity is confirmed by mass spectrometry, comparing the observed mass with the theoretical molecular weight calculated from the molecular formula.
Do I receive a certificate of analysis for every batch?
The batch-specific certificate of analysis is provided on request for the relevant product; please state the product and the batch when you ask.
Why do some products not list a CAS number?
For multi-component blends and proprietary formulations, a single CAS number does not apply; composition is described in the relevant batch documentation instead.
What does 'see batch documentation' mean?
This note appears when a specification field, such as a CAS number or molecular formula, cannot be reduced to one single value for the product and is instead described in the batch documentation.
How do I read a batch's certificate of analysis?
Our COA guide explains the header data, identity and purity sections, chromatogram, and release statement found on a typical certificate of analysis.
What sizes are the materials available in?
Available sizes are listed on the relevant product page; we confirm exact availability on request.
How do I submit an inquiry?
Use the contact form or the WhatsApp contact option and state the product, quantity, and, where relevant, the batch you are asking about.
Does COAgrade ship outside Germany, Austria, and Switzerland?
COAgrade is primarily aimed at buyers in Germany, Austria, and Switzerland, and in English at buyers across the rest of the EU; we confirm details on request.