21 August 2014
Q. We use 4-way stopcocks made of radiation-grade Polycarbonate and HDPE that are not normally cleaned with Alconox. They were accidentally put through the Alconox cleaning process. Stopcocks feel a little stiff, but otherwise appear ok. Would like to know if there are any concerns for this material/corrosion or other incompatibility known with Alconox? A. Stressed polycarbonate is not compatible with low surface tension solutions and heat. Polycarbonate that is unstressed will not have this problem and can be cleaned with Alconox.