Made of transparent polymethylpentene. Each flask individually calibrated to contain/deliver at 20 degrees C. Marked with permanent graduation line. No meniscus to confuse readings. Withstand rough handling without breakage. Resistant to most chemicals. With leakproof polypropylene screw closures. Autoclavable. Before autoclaving, set closure on top of flask without engaging threads. Meets ASTM E288-83 and ISO Standard 384.

This is only for Thermo Scientific, Model 4001-0100. It may differ from the image shown in color, features, may be an accessory, etc. Please refer to the model number or contact us if you have any questions.