Labelling and Organising Vials
A simple labelling and organisation system that prevents mix-ups: what to write on every vial, how to arrange the fridge, and how your labels tie back to your research log.
The moment you run more than one compound, or reconstitute a vial and put it back in a crowded fridge, organisation stops being optional. Unlabelled or poorly labelled vials lead to mix-ups, wasted material, and observations you cannot trust because you are no longer sure which vial they came from.
This guide sets out a lightweight labelling and organisation system — what to write, where, and how to arrange your storage so the right vial is always obvious. It ties directly into the documentation guide, because a good label is the physical anchor for every log entry.
Research use only.
WHAT YOU NEED
Tools
- A fine permanent marker or printable labels
- A fridge box or rack
- Your research log
Supplies
- Your vials
- Small labels or tape (optional)
STEP-BY-STEP
Label every vial the moment you reconstitute
The highest-value label goes on a freshly mixed vial: write the compound, the concentration, and the reconstitution date. A reconstituted vial with no label is the single easiest thing to mix up later.
Tip: Label before the vial goes back in the fridge — never "later", because later it looks identical to every other vial.
Include the four essentials
Every label should carry: the compound name, the concentration (e.g. 5,000 mcg/ml), the date, and enough of the batch number to tie it to your log and Certificate of Analysis. Those four fields make a vial self-explaining.
Keep lyophilised and reconstituted vials separate
Store unopened powder vials in one area and reconstituted solutions in another. This prevents reaching for the wrong state and makes it obvious at a glance what is ready to draw and what still needs mixing.
Use a dedicated fridge box
Keep all vials together in one labelled box or rack in the main body of the fridge — not scattered across shelves or in the door. A single container keeps them off the door's temperature swings and stops them getting lost behind food.
Match the label to your log
The batch number and concentration on the label should match the entry in your research log. This two-way link means any observation can be traced to a physical vial, and any vial to its full history.
Retire and remove finished vials
When a vial is empty or past its discard window, dispose of it and mark it closed in your log immediately. Removing finished vials keeps the storage box uncluttered and prevents accidentally drawing from a dead vial.
Why the label is the anchor of your records
Your research log is only as trustworthy as your ability to connect each entry to a physical vial. The label is that connection. A vial marked with compound, concentration, date and batch number can always be matched to its log entry and its Certificate of Analysis — so every observation stays traceable.
Without labels, a crowded fridge of near-identical vials turns into guesswork, and guesswork poisons the whole dataset. The few seconds it takes to label a vial at reconstitution is the cheapest insurance in the entire workflow.
PUT IT INTO PRACTICE
FREQUENTLY ASKED
What should I write on a reconstituted peptide vial?
Four things: the compound name, the concentration (e.g. 5,000 mcg/ml), the reconstitution date, and enough of the batch number to tie it to your log and Certificate of Analysis. Label it before it goes back in the fridge.
How should I organise vials in the fridge?
Keep them together in one labelled box or rack in the main body of the fridge (not the door), with lyophilised powder and reconstituted solutions in separate areas so it is always obvious what is ready to draw.
Why does labelling matter so much?
The label is the physical anchor for your research log. It lets you trace any observation back to a specific vial, batch and concentration. Without it, a fridge of near-identical vials becomes guesswork that undermines your whole dataset.
What do I do with an empty or expired vial?
Dispose of it and mark it closed in your log straight away. Removing finished or out-of-window vials keeps the storage uncluttered and prevents accidentally drawing from a vial you should no longer use.