Adoption of single-use systems (SUS) has increased steadily over the past few years driven by an increased focus on manufacturing biologics that require smaller scales than blockbuster drugs. Although SUS provide many benefits, some factors need to be considered when implementing them in biopharmaceutical production. With the regulatory landscape intensifying worldwide, drug manufacturers are expecting more data from suppliers to support the purity claims of supplied products, especially related to the purity of their product-contact surfaces. In this article, we…