Centrifuge Tubes & Bottles • Oak Ridge Style Tubes: Choose 10ml, 30ml, or 50ml size • Centrifuge Bottles: Choose PC or PP; 250ml or 500ml size • PP units feature Linerless Screw Cap for leak-proof seal • PC bottles feature Knurled Seal Screw Cap (with o'ring) • Non-sterile, Autoclavable polypropylene and polycarbonate • Oak Ridge Style Tubes have Round Bottoms • See below, for RCF for Oak Ridge Tubes and Centrifuge Tubes • Conforms to US FDA 21 CFR • 80% of total capacity must be filled for maximum performance