A beaker is a cylindrical container with a flat bottom. Most even have a Tiny spout to assist with pouring, as shown in the picture. Beakers are available in a very wide selection of sizes, from five milliliters up to many liters. A beaker is distinguished from a flask by having straight instead of sloping sides. We have a wide range of beakers such as heavy-duty beakers, standard wall beakers , short form and tall form and much more.