Lot Number¶
Definition¶
A lot number is an identifier assigned to a specific manufacturing lot, often used interchangeably with "batch number" in peptide quality systems.
Overview¶
In peptide manufacturing, "lot" and "batch" are frequently synonymous — both refer to a specific quantity of material produced in a single manufacturing cycle. Some systems use "lot" for packaging or final products and "batch" for the synthesis stage.
Technical Explanation¶
Lot vs. Batch: - In many quality systems, the terms are interchangeable - Some organizations distinguish: batch = synthesis run, lot = final packaged product - RPL Peptide uses batch/lot numbers interchangeably on COAs and product labels
Lot Traceability: Each lot can be traced to: - Synthesis records (SPPS parameters) - Raw materials used - Purification records (Prep-HPLC) - Lyophilization parameters - Quality testing results - Distribution records
Importance in Peptide Documentation¶
The lot number is the cross-reference key linking the product to its complete quality history. Always verify that the lot number on the product vial matches the COA documentation.
Related Terms¶
Frequently Asked Questions¶
Q: Should I track lot numbers for my research? A: Yes. Recording lot numbers in your research documentation enables trace-back if quality issues are later discovered. It is considered good laboratory practice.
Q: How many vials are typically in a single lot? A: Lot sizes vary by product and manufacturer. A single synthesis batch may be filled into dozens or hundreds of vials, all sharing the same batch/lot number.