The 17x100 mm Autosampler Tubes are manufactured from virgin polypropylene, which assures ultra-low metal content for ICP/ICP-MS analysis. Easy-to-read class A graduation lines with +/- 0.10 ml tolerances. Graduation lines from 1 ml to 15ml in increments of 1ml. All graduation lines are accurate to Class A tolerances (+/-0.10 ml). Stable to common acids, alkalis and solvents. Non-sterile.