Polypropylene tubes provide the convenience of 1.5mL microcentrifuge in a tube that holds larger volumes. The attached snap cap facilitates one handed opening and closing. Cap is pierceable, allowing for easy access by needle or syringe. Dual graduation scales in increments of 0.5mL and 0.2mL enable more precise measurement when required. Tubes are suitable for use from -86° to 80°C for low temperature storage and general laboratory use and are available in seven color options for sample identification and organization.