Stonylab Conical Centrifuge Tubes, 25 Pack 50ml Polypropylene Graduated Tube

Writing Area Convenient long text mark Strong Screw Lid Preventing sample leakage Leak Proof Blue Screw Cap: these conical tubes have blue screw caps design, which fit snugly into the plastic tubes to prevent sample leakage, while the inner surfaces of the centrifuge tubes are smooth and flat to prevent residual solution Easy to Read Area: the test tube with screw cap is clearly graduated in 1ML increments and includes a convenient white write mark for easy marking and discriminate for your daily use or experimental analysis Sufficient Quantity: the package includes 200 pieces of conical centrifuge tubes with a capacity of about 15 ml, ample quantity can satisfy your daily use and replacement needs, you can also send them to your family or friends who need to do experiments