Nalgene 1510 Griffin Low-Form Teflon PFA Beakers are sturdy and tough and can handle temperatures from -270° to +250°C. Molded from chemically resistant perfluoroalkoxy resin and featuring a heavy-wall design, these beakers are ideal for continual lab usage. Highly resistant to most chemicals, including the strongest sulfuric, nitric, chromic and phosphoric acids—will not contaminate contents with leachables. Not for use on a hot plate. Autoclavable.