These disposable conical-bottom and freestanding tubes feature black printed graduations and smooth inner walls for easy filling and sample preparation.

• Easy-to-read black graduations in ±2% increments
• White printed writing area for permanent coding
• RNase-, DNase-, and endotoxin-free
• Autoclavable (121 °C) and freezable (–80 °C)
• Can be centrifuged up to 12500×g
• Sterile tubes are sterilized by irradiation
• During the freezing process, it is better to use plastic rack
• During high-speed centrifugation, it is better to use suitable rotor adapters

Caps are available in two styles: flat, with a smooth surface for additional labeling options, and plug style for a secure seal when using shakers and horizontal incubators. All caps are made of green high-density polyethylene.

Rack-packed tubes are packaged in freezable, recyclable, autoclavable, washable plastic racks. The racks are marked with numbers (1 to 25) for identification, they are angular at one end to stack up easily. The interlocking design of each polypropylene rack makes them ideal for benchtop organization.