How we test
We measure small molecules by HPLC-MS on a high-resolution system and compare the measured mass with the expected mass for the stated formula. Purity is measured by UV detection.
If we have a reference standard we can measure the amount. If not, we report identity and relative purity and say so on the certificate.
What we measure
| Identity | Accurate mass compared with the expected mass for the stated formula |
|---|---|
| Purity | HPLC-UV peak-area purity |
| Content | Against a reference standard, where available |
| Report | Chromatogram, spectrum and any limits of the test |
What is on the certificate
- Sample description and stated formula
- Measured mass and mass error
- Purity and, where possible, content
- Chromatogram and spectrum
What to send
- Solid or solution in a sealed vial
- Name, formula or structure
- Any handling or hazard information
Please wait for our packing instructions before you ship. They confirm amounts, container, temperature and where to send the samples.
Independence. Global Pure Laboratory is an independent testing lab. We do not make, source or sell the compounds we test, and we do not endorse any of them.
Research use only. For research use only. Not for human or animal use, or for use as a drug, food, device or cosmetic.