American Scientific Product’s False Bottom Tubes are designed for use as a secondary tube for barcoding on automated analyzers. Popular brands of analyzers includes Hitachi®, Olympus®, Corning®, Ortho®, Kodak®, Beckman®, IA®, Tosoh®, Vitros® and more. Products Features include: 5mL capacity tubes available in natural, Material: Polypropylene (PP), Conical false bottom, Self-standing, Non-graduated, Sterility: Non-sterile, Autocalavable: Yes. 121°C for 20 minutes with cap removed, Brittleness Temperature: 0°C, Maximum Temperature: 135°C, Dimensions: 16mm OD x 97mm H, Please Note: White Screw Caps are sold SEPARATELY.