How It Works
This generator works in 4 steps.
Import the solution data
Pull name, concentration, volume, and source from a dilution result, or type them.
Add traceability fields
Type preparer, date, expiry, stock lot, and storage.
Choose the label format
Select label size, font, and barcode type.
Print
Print to a label printer or export a PDF sheet.
The Formula
The formula fills the label from the dilution record and computes expiry from the preparation date.
C₂ = C₁ × V₁ / V₂1:DF, where DF = C₁ / C₂Date_exp = Date_prep + shelf life- C₁ / C₂:
- Stock and prepared concentrations
- DF:
- Dilution factor
- shelf life:
- Days set by SOP
25 mL of 1 M Tris-HCl made up to 500 mL produces a label reading "Tris-HCl 50 mM, from 1 M (1:20), 500 mL" with a 30-day expiry.
Conversion Table
The conversion table shows the 8 fields of a sample buffer label.
| Field | Sample value |
|---|---|
| Name | Tris-HCl buffer |
| Concentration | 50 mM, pH 7.5 |
| Prepared from | 1 M Tris-HCl, lot 24A117 (1:20) |
| Volume | 500 mL |
| Prepared by / date | A.B. / 2026-11-13 |
| Expiry | 2026-12-13 |
| Storage / hazard | 4 °C (39 °F) / none |
| ID / barcode | BUF-0458 |
What Is the Dilution Label Generator?
The Dilution Label Generator is a tool that prints labels for prepared solutions, showing the concentration, source stock, dilution, preparation date, preparer, expiry, and an identifier or barcode. The generator takes values from the dilution calculation, so the label matches the math.
Labeling requirements under OSHA's Hazard Communication Standard, GLP, and ISO/IEC 17025 call for traceable identification of prepared solutions. The generator fills 8 standard fields, supports common label sizes, and prints Code 128 or QR codes that link to the preparation record.
Common Uses
There are 5 main uses of this generator.
Lab solutions
Labs label buffers, reagents, and standards.
Secondary cleaning containers
Facilities label spray bottles under hazard communication rules.
Pharmacy compounding
Pharmacies label compounded dilutions with beyond-use dates.
Sample tubes
Labs label diluted samples with barcodes.
Audit readiness
QA teams standardize label content across sites.