Centrifuge tubes 15 ml made of visually transparent PS

Made of PS or PP. Conical, with graduations at 0.25, 0.5, 1.0, 2.5, 5, 10, 12 and 15 ml. Metal-free (< 100 ppm Sb, As, Ba, Cd, Cr, Pb).Can be centrifuged up to 1200 x g.