Medegen Medical Leak-Resistant Sterile Specimen Containers # 4938 - Gent-L-Kare Specimen Container, 3 oz, Lid, White, Sterility Seal & Label, Graduated In 10mL Increments From 10mL to 90mL, 100/bg. Ideal for pneumatic tube systems. The polypropylene container allows quick visualization while the polyethylene lid ensures a tight-seal for maximum leak resistance.