Caplugs Evergreen 15 ml Centrifuge Tubes are precision molded from premium-grade, chemically-inert thermoplastics. Polystyrene tubes are glass-clear and polypropylene is nearly transparent.

• Polystyrene tubes withstand up to 6200×g and are appropriate for use with mild acidic (except oxidizing acids) or alkali solutions, alcohols (except higher alcohols) and salt
• Polypropylene tubes withstand up to 12100×g and are appropriate for use with stronger acids (except oxidizing acids) or alkalis, alcohols, organic solvents, chlorinated and aromatic hydrocarbons (except xylene) and ketones
• Screw caps have molded-in sealing rings and heavy-duty threads, the quality assurance program features vacuum chamber testing (95 Kpa) to ensure that these caps close tightly every time

Accurate, easy-to-read graduations are molded-in at 0.1 ml intervals from 0 to 1 ml and at 0.5 ml intervals from 1 to 5 ml and every 1 ml from 5 to 15 ml. The outside diameter is 17 mm and the overall length is 120 mm.