Test Methods

USP 661: Physicochemical (PE and PP) - Extraction - Nonvolatile Residue, Residue on Ignition, Heavy Metals, Buffering Capacity

USP 661: PE and PP • Buffering Capacity for Containers – Plastics • Colorant Extraction (PET and PETG) • Differential Scanning Calorimetry for Plastics • Ethylene Glycol in PET and PETG Extracts • Extraction (10 days @ 49°C) - 25% Alcohol - 50% Alcohol - Purified Water - n-Heptane • Extractions and Heavy Metals for PET and PETG • Heavy Metals for Containers – Plastics • Nonvolatile Residue: Containers – Plastics • Physicochemical Test Extract – Plastics • Plastics – Infrared Spectroscopy Identity Test • Residue on Ignition: Containers – Plastics • Total Terephthaloyl Moieties in PET and PETG
USP 661