Azer Scientific Prefilled Formalin Container 2,366 mL Fill in 1.25 gal. (160 oz.) Screw Cap Unprinted NonSterile (1036484_EA) 1/EAAzer Scientific's prefilled formalin containers are half filled with a traditional 10% neutral buffered formalin fixative, used in histological applications for fixation and storage of tissue specimens. These containers are made from high density polyethylene and have a handle for easy transport. Large prefilled formalin containers are designed for collection of large tissue specimens. The secure screw top closure creates a moisture and tamper