Rapid ECH0137A 50ml Beaker made of premium quality, translucent polypropylene plastic. 5ml raised graduations and specifications and a beaker features a tapered spout for easy pouring. Beaker measures 2.4" tall and 1.7" in diameter. Inner diameter measures 1.6". Microwavable, autoclavable, with superior chemical durability. Can withstand temperatures between -20°C to 135°C.