On this page
A handful of the Academy’s most-referenced tables, gathered for quick checking. Each links back to the article that explains it in full.
The charts are general and educational; product-specific figures come from the product page.
Key takeaways
- Compact, at-a-glance versions of key Academy tables.
- Covers the seven-point framework, identity vs. purity, units, storage ranges, and COA sections.
- General orientation — product-specific figures come from the product page.
- ppm and ppb differ by a thousandfold; read units carefully.
- Lyophilized products ship at ambient temperature regardless of storage range.
Quick-reference tables
This page gathers a few compact reference charts drawn from across the Academy — the kind of thing worth checking at a glance. Each links back to the article that explains it in full. The charts are general and educational; product-specific figures always come from the product page and its documentation.
The seven-point framework
| Point | Question it answers |
|---|---|
| Identity | Is it the right compound? |
| Purity | How much is the main component? |
| Net Content | Is the labeled amount present? |
| Endotoxin | Are endotoxin levels within limits? |
| Sterility | Are viable microorganisms absent? |
| Heavy Metals | Are trace metals within limits? |
| Conformity | Does the batch meet its specifications overall? |
Identity vs. purity at a glance
| Identity | Purity | |
|---|---|---|
| Question | Is it the right compound? | How much is the main component? |
| Common method | Mass-based (LC-MS) | HPLC (area percentage) |
| Does not tell you | How pure it is | Whether it is the right compound |
Units quick-reference
| Unit | Meaning | Used for |
|---|---|---|
| % | Percentage | Purity (e.g., area percentage) |
| ppm | Parts per million (1 in 1,000,000) | Trace contaminants (e.g., heavy metals) |
| ppb | Parts per billion (1 in 1,000,000,000) | Very low trace levels |
| EU/mL, EU/mg | Endotoxin units per volume or mass | Endotoxin |
| mg | Milligram (mass) | Net content / quantity |
Storage temperature ranges (general)
| Range | Description | General use |
|---|---|---|
| Ambient | Around normal indoor conditions | Short-term dry storage; transit of lyophilized material |
| Refrigerated | Cool, above freezing (~2–8 °C) | Longer-term storage of many materials |
| Frozen | Below freezing (e.g., ~ −20 °C) | Extended long-term storage |
| Deep frozen | Much colder (e.g., ~ −80 °C) | Especially sensitive material |
GENERAL, NOT PRODUCT-SPECIFIC
These ranges are orientation. Exact storage for a given product comes from its product page and documentation; lyophilized products ship at ambient temperature regardless.
Sections of a COA
| Section | What it answers |
|---|---|
| Material name | Which material the certificate describes |
| Batch / lot number | Which production run it applies to |
| Test date | When the analysis was performed |
| Method | How each property was measured |
| Result & specification | The value and the criterion it is judged against |
| Laboratory & approval | Who tested and released the results |
Frequently asked questions
No. They are general references. Exact figures for a particular product come from its product page and documentation.
Parts per million versus parts per billion — a thousandfold difference. Always read a value with its unit.
Each chart links to its source article in the Quality & Testing or Storage & Handling clusters.
Related articles
Glossary terms
Company standard
Continue learning
- Seven-Point Quality Program — the framework chart in full.
- Identity Testing and Purity Testing — the identity-vs-purity chart.
- Heavy Metal Testing — the units chart in context.
- Storage Temperatures — the storage-range chart in full.
Research Use Only
All materials referenced are for laboratory research purposes only and are not for human or veterinary use. This article is educational and does not provide medical advice, dosing, or instructions for use.