Master batch record

A master batch record is the approved, controlled template that defines how a specific product and batch size must be manufactured, tested, packaged, and documented. It describes the intended process before execution and serves as the reference against which individual batch manufacturing records are created and executed.

What a master batch record includes

In regulated manufacturing environments, such as pharmaceuticals or medical devices, a master batch record commonly includes:

• Product identification and strength or variant
• Defined batch size and allowable yield ranges
• Bill of materials and component specifications
• Detailed manufacturing instructions and operating parameters
• Required equipment and line setup instructions
• In-process controls and sampling plans
• Quality control tests and acceptance criteria
• Labeling, packaging, and storage instructions
• Spaces or structures for recording critical data at execution time

The master batch record is typically maintained under document control, with version history, approval signatures, and linkage to change control, validation, and quality risk assessments.

Operational role

Operationally, the master batch record:

• Serves as the source document from which batch manufacturing records (BMRs) or batch production records (BPRs) are generated
• Provides standardized, repeatable instructions across shifts, sites, or contract manufacturers
• Acts as a reference for training, investigations, deviations, and audits
• Can be implemented as paper forms, controlled PDFs, or electronic records in MES/EBR systems

In electronic systems, the master batch record may be represented as an electronic recipe or workflow definition, including parameters, checks, and system-enforced sequences.

What it is not

A master batch record is not the executed record of a specific batch. It does not itself prove that a batch was manufactured according to instructions; that evidence is captured in the executed batch record derived from the master.

Common confusion

• Master batch record vs. batch manufacturing record (BMR) / batch production record (BPR): The master batch record is the template and specification. The BMR/BPR is the completed, batch-specific record showing what actually happened, who performed each step, and when.
• Master batch record vs. standard operating procedure (SOP): An SOP describes how to perform a type of activity in general. A master batch record integrates product-specific instructions, quantities, parameters, and recording requirements for a particular product and batch size.

Link to the source context

In the context of pharma, where the term BMR is often used, the batch manufacturing record is the executed evidence for a specific batch. That BMR is generated from the master batch record, which defines the approved method and controls that every batch must follow.