Best beaker choose - plastic material beakers, Microwaveable, dishwasher proof plastic beakers. The construction materials are a good, non toxic food grade plastic.EASY TO STORE- Pack of 4 size for 50ml / 150ml / 250ml and 500ml. All fit inside each other, so they only take up the space of the largest one.EASY TO WASH- Have washed fine with no permanent staining from the liquid or water.EASY TO READ- The graduations are raised on the inside of the beaker which helps with accurate measurements.EASY TO POURING- Little pouring spout on each so the liquid goes only where you want it to. All the top edges of these beakers are slightly fluted to minimise slopping.The item is a set of 4pcs graduated measuring beaker in different sizes, which is mainly made of durable plastic material for safe to use, suitable for measuring flour, sugar, vinegar, sauce, or other liquid. Graduated surface, easy reading, it is used widely in kitchen or laboratory.Durable, lightweight, easy to handle.Color: Transparent colorMaterial: plasticcapacity: 50ml / 150ml / 250ml / 500mlsize: 6.2x4.8cm, 8x6.6cm, 9.8x7.7cm, 10.7x9.4cmPackage Including: 4 * 50ml / 150ml / 250ml / 500ml Plastic Graduated Beakers (Transparent)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.