Lab Record Keeping: What to Log for Every Batch

Good records make experiments repeatable and make problems easier to trace. This is a short list of what to write down every time you receive and use a new batch.

When a batch arrives

Record the product name, batch number, date received and storage location. Save the certificate of analysis for that batch with these notes.

Each time you use it

Note the date, the amount used, and the container it came from. If you prepare a solution, record the solvent, the final concentration and the date it was made.

Keep results linked to batches

Write the batch number next to every result. If a later batch behaves differently, you can compare the two reports and your notes directly.

Record checklist

• Name, batch number and date received
• Report saved with the batch
• Date, amount and source for every use
• Preparation details for any solution
• Batch number written beside each result

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