The non-stick, chemically inert surface of Chemware® PFA petri dishes is non-contaminating and ideal for high-purity biological applications that range in temperature from -370°F (-200°C) to 500°F (260°C). Each petri dish is shallow, cylindrical and translucent with a flat bottom that allows for easy observation and uniform specimen growth. Ideal for cell culture or drying applications. Stackable one-piece design does not require a separate lid. Can be autoclaved for repeat use.