How It Works
This calculator works in 4 steps.
Enter the stock on hand
Type the volume of concentrate available.
Enter the dilution
Type DF, a ratio, or stock and target concentrations.
Enter the loss allowance
Type the percent lost to dead volume and handling.
Read the yield
The calculator returns gross yield, usable yield, and full containers or uses.
The Formula
The formula multiplies the stock volume by the dilution factor and removes the loss fraction.
Y_gross = V_stock × DFY_usable = Y_gross × (1 − L)N = ⌊Y_usable / V_use⌋- V_stock:
- Available stock
- DF:
- Dilution factor
- L:
- Loss fraction
- V_use:
- Volume per use
250 mL of stock at DF 20 gives 5,000 mL gross. With 10% loss, 4,500 mL is usable, enough for 9 fills of a 500 mL bottle.
Conversion Table
The conversion table gives gross and usable yield for 6 stock amounts and dilutions.
| Stock on hand | DF | Gross yield | Loss | Usable yield |
|---|---|---|---|---|
| 100 mL | 10 | 1,000 mL | 5% | 950 mL |
| 250 mL | 20 | 5,000 mL | 10% | 4,500 mL |
| 1,000 mL | 64 | 64,000 mL | 2% | 62,720 mL |
| 50 mL | 100 | 5,000 mL | 5% | 4,750 mL |
| 5 mL | 1,000 | 5,000 mL | 3% | 4,850 mL |
| 20 mL | 4 | 80 mL | 15% | 68 mL |
What Is the Usable Batch Yield Calculator?
The Usable Batch Yield Calculator is a tool that estimates how much prepared solution the available stock produces at a set dilution, after losses for dead volume, priming, and spills. Gross yield equals stock volume times the dilution factor.
Yield planning answers "will this bottle last the job?" before mixing begins. The calculator returns gross yield, usable yield after the loss percent, and the number of full containers, plates, or reactions the usable yield fills.
Common Uses
There are 5 main uses of this calculator.
Reorder timing
Labs see when stock runs out and reorder in time.
Experiment planning
Researchers count how many plates a stock supports.
Job planning
Cleaning crews confirm a jug covers a site.
Field supply
Field teams pack enough concentrate for a trip.
Inventory audits
Managers convert stock levels into usable volume.