What is a Batch Number?
A batch number is an identification code assigned to a specific quantity (batch) of a product that has been produced under uniform conditions. It is used to trace, verify and document that batch within production and quality processes.
A batch number makes it possible to trace the origin, production conditions and quality of a group of products.
🎯 Why are batch numbers important?
| Use case | Description |
|---|---|
| Traceability | Trace production data in incidents or recalls |
| Quality control | Test the batch for properties, rejects or deviations |
| Compliance & audit | Comply with GMP, HACCP, FDA, ISO 9001, ISA-88 |
| Production replay | Reuse identical batch settings via MES or Batch Control |
| Returns management | Identify which products must be recalled in a quality issue |
🔢 What does a batch number look like?
- Often numeric or alphanumeric (e.g.
B240725-03) - May encode production year, date, line or shift
- Recorded on packaging, labels or in a database
- Unique per batch, not per individual product (use a serial number for that)
🏭 Examples in OT environments
| Use case | Example batch number | Notes |
|---|---|---|
| Pharmaceutical tablets | BTCH20250725A |
Date and shift code for the production run |
| Food products (e.g. sauce) | L202507-02 |
Lot number + batch sequence number |
| Paint production | VP-0701-003 |
Paint plant + week number + batch |
| Recipe-driven MES systems | Generated automatically | Based on ISA-88 procedures and unit status |
🔁 Batch number vs. serial number
| Batch number | Serial number |
|---|---|
| Identifies a group of produced items | Identifies a single individual item |
| Used in process or batch production | Used for discrete products |
| Important for quality management and recall | Important for maintenance and asset tracking |
📌 In summary
A batch number identifies a specific production batch and is essential for traceability, quality control and Compliance. In food, pharma and chemicals especially, it is an indispensable element of production and registration systems.