Batch Number

A batch number, also called a lot number or lot code, is a string of letters and numbers printed on a package that identifies the exact production run the item came from. Every unit made at the same time, from the same ingredients, on the same line shares that code.

Why batch numbers exist

• Traceability: If a problem is found, a maker can trace exactly which ingredients, equipment and dates were involved.
• Targeted recalls: Instead of pulling every product off the shelves, a company can recall only the affected lots.
• Quality records: Batch numbers connect finished products to their production and testing records, including any certificate of analysis.
• Freshness: Codes are often printed near the best-by date and can help a brand confirm when an item was made.

Where to find it

On food packaging, batch numbers are usually printed or laser-etched on the back, bottom or crimped edge of a wrapper, often next to the best-by date. They may be printed in small, plain type that differs from the main package artwork. Formats vary by maker; some codes include the production date in a shortened form.

Batch numbers and lab reports

If a brand publishes lab results from third-party testing, shoppers generally check that the batch number on the report matches the package in hand. A report tied to a different batch, or to no batch at all, tells you much less.

Batch number vs. verification code

A batch number is shared by many units in a production run. A scratch-to-verify code, by contrast, is typically unique to a single package and is used to confirm authenticity. Both are useful, but they answer different questions: "when and how was this made?" versus "is this package genuine?"

A helpful habit

Keep your packaging, or snap a photo of the code, until you have finished a product. If you ever need to reach out about an order, having the batch code and your order number ready makes it easier for us to help. Visit our contact page or review our shipping and returns policy.