The Snap-Cap Microcentrifuge Tube is available in five sizes, 250µl, 400µl, 500µl, 1.5ml and 1.8ml. All sizes have attached, tight-fitting Snap-Caps for optimal sealing during sample processing and centrifugation. Colors: Natural (white) for 250µl, 400µl, and 500µl. The 1.5 ml and 1.8ml sizes are available in natural and four additional colors for color-coding. The Snap-Cap Microcentrifuge Tube’s smooth, conical interior lets you remove your entire sample with ease, and without material hangup. You can even cut it to remove a spun pellet. The Snap-Cap is attached to each tube, and the entire unit is autoclavable at 250°F at 15 psi for 15 minutes. Fits Beckman™, Eppendorf™ and all other microcentrifuges.