Any residual substances in plastic bottles can compromise the integrity, safety, and effectiveness of the products they contain. These residues may include plastic additives, manufacturing residues, or environmental contaminants. Non-volatile residue (NVR) testing is used to evaluate the cleanliness and purity of plastic bottles, especially in industries such as pharmaceuticals, biopharmaceuticals, food and beverage, and medical device manufacturing. This test quantifies the amount of residue that remains after bottles are exposed to solvents and dried.

Savillex initiated NVR testing of sterile 1000 mL Purillex PETG Square Media Bottle assemblies via a third-party laboratory (Aspen Research, Maple Grove, MN, USA) to evaluate and characterize NVR levels after extraction in 50% ethanol at 40°C for 21 days.

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