A packaging system, as defined in Packaging and Storage Requirements 〈659〉, contains or is intended to contain a medical article, such as a pharmaceutical drug product. As such, a packaging system provides the means for manufacturing, distributing, and storing these articles and products, and potentially for administering a drug product. A plastic packaging system is composed wholly or of a substantial portion of plastic materials. The term “plastic packaging system” refers to the sum of packaging components that together contain the pharmaceutical product, including closures. This sum of packaging components includes: 1) primary packaging components, which are those that directly contact the pharmaceutical product at some time during the product's manufacturing, distribution, storage, or use; and 2) secondary packaging components, which are those that may interact with the pharmaceutical product during the product's manufacturing, distribution, storage, and use, although the component does not directly contact the pharmaceutical product.