Peptide Molecular Weight Explained
What does a peptide's molecular weight mean? A plain-English explainer of daltons, how it's calculated, and why it matters for identity and calculations.
Lab & Handling
Why Freeze-Thaw Cycles Damage Peptides
Why freeze-thaw cycles damage peptides — what happens, the warning signs, and how to avoid it by aliquoting. A research handling guide.
How Long Do Reconstituted Peptides Last?
How long do reconstituted peptides last? A simple reference for fridge and freezer storage windows and how to get the full shelf life.
Do Peptides Need to Be Refrigerated? A Storage Guide
Do research peptides need to be refrigerated? A simple storage guide covering lyophilized powder vs reconstituted solution, and the right temperatures.
Lyophilization: Why Research Peptides Are Freeze-Dried
What lyophilization (freeze-drying) is and why research peptides are supplied as a freeze-dried powder. A plain-language primer.
Reconstitution Math: Calculating Peptide Concentration
How to calculate peptide concentration after reconstitution: the formula, worked examples, and measuring a target amount. For research use.
Understanding Peptide Purity and HPLC Testing
What peptide purity means and how HPLC measures it, plus how purity differs from identity (mass spectrometry). A research primer.
Bacteriostatic vs Sterile Water for Peptide Reconstitution
Bacteriostatic vs sterile water for peptide reconstitution: the difference, when to use each, and how researchers choose a diluent.
Top 5 Peptide Storage Mistakes to Avoid
The top 5 research peptide storage mistakes — heat, freeze-thaw, light, moisture and labeling — and what to do instead to keep material stable.