PTFE Thin Wall Beakers are non-contaminating and completely inert to highly corrosive reagents. They are non-wettable, unbreakable, lightweight, and heat resistant. Easy to clean, these beakers have a broad spout for easy pouring. They can be heated on a hot plate up to 550 ºF (288 ºC) and used in a microwave, when proper care is exercised. The specially molded bottom allows rapid heat transfer. Chemically resistant to acids and bases. Ultra-pure.