PAB is a Latex-free, PVC-free, DEHP-free Partial Additive Bag PAB® Containers, available in 25mL, 50mL, and 100mL fill volumes in 100mL and 150mL container sizes, are made of a copolymer of ethylene and propylene which contains no plasticizers and exhibits virtually no leachability. PAB containers are nontoxic and biologically inert.