These cylinders and beakers are well suited for experimental projects, can be sterilized at high temperature to use repeatedly, chemically resistant to most acids, bases and many common solvents. Five different sizes for various measurements and activities, meet your different needs.Unbreakable, durable and easy storage. Perfect for home and school science experiments, students or teachers doing chemical experiments in the lab, also great for kids Halloween costume. Nice not having glass to worry about breaking. Wide rim and a tapered pour spout for easy filling and pouring. The non-wetting interior surface eliminates concave menisci, providing more accurate measurements. The wide hexagonal base design provides stability and makes the cylinder roll-resistant Switching from glass cylinders to Globe's plastic equivalents will greatly reduce breakage and the potential for injury Chemically >resistant to most acids, bases and many common solvents Packaging Contains: 4 clear plastic cylinders(10, 25, 50, 100 ml)5 transparent plastic beakers(50, 100, 250, 500, 1000 ml) 5 disposable plastic dropper(3 ml) 1 test tube brush