In the lot number, what does the L indicate?

• A. A single alpha code indicates the month of production. A-M represent each month of year excluding the letter I. Letter L indicates the month of November.
• B. The equipment line indicator
• C. The plant location
• D. The quality control code

Answer: (A)

Lot numbers often encode the production month with a letter. In this scheme, the months are represented by letters A through M, skipping I, so A = January, B = February, and L = November. The other possible fields—equipment line, plant location, and quality control code—are represented by different parts of the lot number, not the month code. So the L indicates the batch was produced in November.