These DEHP-free PVC bags are made of 16 mil. film plasticized with TOTM. They are manufactured of latex-free, USP Class VI materials in a Class 100,000 cleanroom environment. The bags are stocked in three sizes: 100 ml, 500 ml, and 1,000 ml. The 100 ml bag has two ports: both are 0.324 in. ID. The 500 ml bag has three ports: two are 0.324 in. ID, the other 0.258 in. ID. The 1,000 ml bag has two ports: one 0.324 in. ID and the other 0.258 in. ID.