These nesting beakers will save space while storing! Single piece, molded of translucent plastic (polypropylene), with raised numerical graduations on the inside and pouring spout. Resistant to most common acids, bases and solvents. Does not have meniscus. Autoclavable to 100 C. Set of 8 includes one each of: 30ml, 50ml, 100ml, 150ml, 250ml, 400ml, 600ml, and 1000ml.