Scale a lab recipe or solution up or down — buffers, media, master mixes — by entering your original batch size and the target. Every ingredient is scaled by the same factor.
| Ingredient | Original amount | Scaled amount |
|---|
Enter your original batch size and the target you want; every ingredient amount is scaled by the same factor. Same unit in and out (e.g. mL, g). Useful for scaling buffers, media and reaction master mixes.
How to use it
- Enter the original batch (e.g. the volume the recipe is written for) and your target batch.
- Type each ingredient and its original amount — the scaled amount appears instantly.
- Keep units consistent (mL in → mL out, g in → g out).
Tips
- For a PCR or qPCR master mix, set the original batch to 1 reaction and the target to your number of reactions (add 1–2 extra for pipetting loss).
- For dilutions of a stock to a final concentration, the C1V1 = C2V2 relationship is usually more convenient than scaling.
- Scaling assumes everything scales linearly — double-check pH and any “to volume” (q.s.) steps.
Frequently asked questions
How do I scale a recipe?
Multiply every ingredient by the scale factor (target ÷ original batch). Enter both batch sizes above and the tool does it for each ingredient.
Can I use it for a PCR master mix?
Yes — set the original batch to 1 reaction and the target to the number of reactions (plus a little extra for pipetting loss).
