- mg describes mass; mL describes volume.
- A presentation is separate from a measured result.
- Check the selected format and its documentation.
Start with the unit
Mass
A milligram is a unit of mass.
Volume
A millilitre is a unit of volume.
Mass concentration
Mass stated per unit volume.
These describe different quantities. Keep both the number and its unit in the purchasing record; a number on its own leaves the format unclear.
Read the complete format
Compare references using the units as listed. The examples below come from the Veelyon catalog and describe nominal listings, not measured batch results.
| Listed reference | What to compare |
|---|---|
| BPC-157: 5 mg / 10 mg | Two nominal mass options. |
| NAD+: 500 mg / 1000 mg | Different nominal amounts; check the selected option. |
| DSIP spray: 10 mg / 10 mL | A listing with mass and volume information. |
A bottle’s appearance does not establish its amount or analysis. Match the listing to supplier specifications and the relevant batch record.
Separate presentation from evidence
Vials and nasal-pump bottles describe packaging presentations in this catalog. Their concept photographs help distinguish formats; they are not a replacement for product specifications, composition or handling documentation.
Keep the compound name, nominal amount, declared volume where relevant, presentation and document status together. Leave unresolved fields open until the supplier provides the information.
These research materials are not presented for human, veterinary or therapeutic use. This guide provides no administration or preparation instructions.
Compare catalog formats ↗Before adding a format
A short way to keep your shortlist consistent.
About these guides.
Published by Veelyon Lab. These guides explain catalog formats, document review and record keeping. Background references are linked below so readers can review their scope.
Guide checklists record your review progress. They do not independently verify a compound, replace a batch-specific report or certify Veelyon inventory. Original source reports and Upcoming Veelyon COAs are identified separately in the source-report library.
Background reading.
Unit reference for mass.
Unit reference for volume.
Educational guidance for laboratory sourcing. This is not a product certificate, a clinical guide or an instruction for human or veterinary use.