Units per Package: 72. 40 mL, Clear, Low Level TOC Vials - Polypropylene Open Top Caps and Septrseal PTFE/Silicone Septa; Precleaned for Low Level TOC Analysis. Please call 800-648-7800 for bulk or volume pricing. Part Number: 276740-TOC-VAC. Vials and Septa – Laboratory Consumables | Shimadzu