What is the difference between a master batch record and a batch production record?

1Two records with different jobs.

A master batch record is the approved set of instructions for making a product. A batch production record is the record of one batch made from those instructions. The master is written and approved once, then revised under control; a batch record is created for every batch and completed as the work is done.

In US law the master is the “master production and control record”. 21 CFR 211.186 requires one for each drug product, “including each batch size thereof”, “to assure uniformity from batch to batch”. It is prepared, dated and signed by one person and independently checked, dated and signed by a second, following a written procedure.¹ The batch record is the “batch production and control record”, which 211.188 requires “for each batch of drug product produced”, with “complete information relating to the production and control of each batch”.² Neither section uses the phrase “master batch record”. This page uses it for the record 211.186 describes.

EU GMP Chapter 4 draws the same line between instructions, which direct the work, and records, which give evidence of it, including “a history of each batch of product”. Its masters are the Manufacturing Formula and Processing Instructions, which should exist “for each product and batch size to be manufactured”, and the Packaging Instructions for each product, pack size and type. Its batch records are the Batch Processing Record, kept “for each batch processed”, and the Batch Packaging Record.³ ICH Q7, the GMP guide for active pharmaceutical ingredients, calls the pair master production instructions and batch production records.⁴

2What each one contains.

The US contents come from 211.186(b) and 211.188(b), and the quality unit’s review before release from 211.192.¹²⁵ ICH Q7 asks for the independent check of the master to be made by a person in the quality unit.⁴

3The US keeps one batch record where the EU keeps two.

Under Part 211 one record covers production and control together, packaging and labelling included: line inspections before and after use, complete labelling control records and the results of label examinations are among its items.² Chapter 4 splits the same history in two. The Batch Processing Record covers processing against the manufacturing formula and processing instructions. A separate Batch Packaging Record covers packaging, with the quantities of printed packaging materials and bulk product issued, used, destroyed or returned to stock, for reconciliation.³

Neither text uses the abbreviation BPR, so the letters can stand for the US batch production record or the EU batch processing record, and the two hold different contents. Chapter 4’s Batch Processing Record lists in-process controls but not finished-product testing, which Chapter 4 covers through written testing procedures whose tests are recorded (4.26).³ A contract manufacturer and its client who both write BPR should agree which record they mean before comparing contents.

4How a batch record is issued from the master.

The batch record starts as a copy of the master. Its first element under 211.188(a) is “an accurate reproduction of the appropriate master production or control record, checked for accuracy, dated, and signed”.² ICH Q7 asks for the batch record to be checked before issue “to assure that it is the correct version and a legible accurate reproduction”, numbered with a unique batch number, and dated and signed when issued.⁴ Chapter 4 says reproducing working documents from master documents “should not allow any error to be introduced”, and asks for the relationships and control measures between master documents, official copies, data handling and records to be stated, for hybrid systems and for wholly paper or wholly electronic ones.³

FDA expects blank forms, master production and control records among them, to be controlled by the quality unit or another document control method. Numbered sets may be issued and reconciled when complete, and incomplete or erroneous forms are kept with a written justification for their replacement.⁶

In an electronic system, creating an electronic master production and control record is an intended use FDA expects to be validated. Qualifying a manufacturing execution system “does not demonstrate that a given MPCR generated by the MES contains the correct calculations”; validating the workflow does. An electronic signature with appropriate controls can stand in for the “full signature, handwritten” that 211.186(a) specifies.⁶

5When the master changes.

Under 211.100(a), written production and process control procedures, including any changes, are drafted, reviewed and approved by the appropriate organisational units and reviewed and approved by the quality control unit. On a computer system, 211.68(b) requires controls so that changes to master production and control records are made only by authorised personnel.⁵ ICH Q7 asks for the issue, revision, superseding and withdrawal of documents to be controlled “with maintenance of revision histories”, and Chapter 4 for instruction documents to be approved, signed, dated and uniquely identifiable, with a defined effective date.⁴³

The batch record shows which master it was issued from: where it is produced from a separate part of the master document, ICH Q7 asks it to reference “the current master production instruction being used”.⁴ Entries made after issue are corrected by signed and dated alterations that leave the original readable.³ Departures from the instructions are recorded and justified under 211.100(b); in the EU the record notes them with signed authorisation for the deviation.⁵³

Batch records are kept at least one year after the batch’s expiration date in the US, and in the EU one year after expiry or at least five years after certification by the Qualified Person, whichever is longer.⁵³ EudraLex still lists the January 2011 text of Chapter 4; a revised draft, covering electronic and hybrid documentation and signatures, went to public consultation in July 2025.⁷⁸

6How it runs in Seal.

In Seal’s electronic batch records, the master batch record is versioned, executable configuration: stages and steps with their materials, equipment, parameters, calculations, samples and signatures. Effectivity decides which version a new batch runs, the batch records the versions selected, and a later change does not rewrite work in progress. The executed batch record then accumulates what actually happened, from the containers consumed to the values recorded, the deviations raised and the final reconciliation.

When a new instruction revision becomes active while batches sit at different stages, the version handover guide shows how prepared, running and newly created batches can need different treatment, with a pinned reference to the revision each batch was actually assigned. Batch records sit with laboratory, quality, training and inventory records on Seal’s manufacturing execution platform.