19.10.2021 | LOGFILE Feature 39/2021

Excerpt from the GMP Series E-Book “Packaging Materials for Pharmaceutical Products

Packaging Material Testing: The Role of Your Suppliers

Packaging Material Testing: The Role of Your Suppliers

7 min. reading time | by André Deister, Sabine Mendel


The supplier of the packaging materials plays an important role when pharmaceutical packaging materials undergo testing. Because of the numerous materials involved, the complexity of the manufacturing process and the extremely specific test parameters, many of the packaging material tests are carried out at the supplier.

The pharmaceutical company must be able to prove that the packaging material components provided by the supplier have undergone proper testing and comply with the specifications.

To ensure that this is the case, it is absolutely essential to reach written agreement on the following in advance:

  • type and scope of the supplier certificate
  • type and number of the random samples provided
  • definition of a delivered batch
  • definition of responsibilities (QA agreement)

In the case of packaging materials that have to fulfil special requirements, a Certificate of Analysis (CoA) from the supplier can be extremely helpful. A CoA, unlike a Certificate of Conformity (CoC), contains concrete results. These can be evaluated by the pharmaceutical purchaser and adapted to its own evaluation system, if necessary. A CoC only confirms that the packaging materials comply with the requirements.

A practical tip: The CoA and data recorded by the supplier can be used to create trend analyses and show quality developments.

Quality Control is responsible for the incoming goods inspection of packaging material components which is often carried out using samples provided by the supplier. Because these samples are not taken randomly from the overall batch by the company's own QC, a written agreement governing the sample-taking process must be in place.

If continuous manufacturing is used to produce the packaging material components, it is important that agreement is reached with the supplier on how a batch is defined. A statistical sample quantity can only be calculated based on a clear batch definition.

This and other specifications are documented in QA agreements that outline the responsibilities in the commercial relationship between the supplier and pharmaceutical purchaser with regard to quality. The possible content of a QA agreement is summarised in Figure 13.A-5.

Possible content of a QA agreement
Specification of the sample-taking process
Type and scope of the supplier certificate
Information requirements and time frames in relation to deviations in the product
Dealing with non-compliant incoming goods
Information requirements and time frames in relation to change control
Limits/handling the underdelivery and overdelivery of orders
Exclusivity agreement for products, processes and test methods
Audit specifications – interval, number of auditors, cost, etc.
Involvement of independent bodies (test laboratories) when contentious deviations occur

Figure 13.A-5 Possible content of a QA agreement

Agreement about these documents is often part of the supplier qualification. The supplier qualification is the responsibility of the QA department and is meant to ensure that the new supplier has established quality systems and manufacturing processes in place that are necessary for producing products that are consistent, safe and of a high quality.

The supplier qualification is carried out by auditing the supplier, and in exceptional cases, by sending written questionnaires to the supplier. A specific number of batches that is used to assess the degree of compliance with the quality requirements is often agreed with the supplier for this purpose. The results from these (qualification) batches are decisive for a positive qualification of the supplier.

Important: The initial (qualification) batches should be tested in full to verify compliance with the agreed specifications.

André Deister


André Deister
Head of OC Packaging Material at Sanofi – Aventis Deutschland GmbH
E-Mail: andre.deister@sanofi.com

Sabine Mendel


Sabine Mendel
Packaging & Artworks Senior Specialist at Wörwag Pharma GmbH & Co. KG
E-Mail: sabine.mendel@woerwagpharma.com

GMP Series – Packaging Materials for Pharmaceutical Products (e-book)

GMP Series – Packaging Materials for Pharmaceutical Products (e-book)

Excerpt from the GMP Compliance Adviser

Handling packaging materials is a high-risk business because of the danger of mix-ups.

The e-book Packaging Materials for Pharmaceutical Products shows you how to successfully circumvent the pitfalls that lie in wait. The guide describes the most important packaging materials, their properties and applications.

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