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A flask is used to mantain temperature of something inside it. It prevents the loss of heat through convection, conduction or radiation. It has a vaccum in between the refill â¦and the wall which stops convection and conduction. The walls are coloured white so that heat does not radiate.
An erlenmeyer flask is a cone-shaped container with neck, so you can hold the flask or attach a clamp or use a stopper. Erlenmeyer flasks are used to measure, mix, and store liquids. The shape makes this flask very stable. They are one of the most common and useful pieces of chemistry lab glassware. Most erlenmeyer flasks are made of borosilicate glass so that they can be heated over a flame or autoclaved. The most common sizes of erlenmeyer flasks probably are 250 ml and 500 ml.