Evaporating Dishes Information

EvapEvaporating flask exampleorating dishes are shallow, limited capacity labware, usually with a lip for easy pouring. Evaporating dishes are commonly small, with volume capacity ranges of 25 ml (or less) to 400 ml. Ceramic, glass, plastic, and metal (platinum) are common materials. Ceramic and metal have the highest heat tolerances; platinum is costly; glass is transparent; plastic may be less prone to breakage, chemically inert, non-contaminating, and easier to clean. They are used to hold samples under high heat conditions.

Video credit: David Grabovsky

Types

This labware can be found in shallow (low) and standard (high) form. In general, shallow form dishes are 2/3 the height of standard form, providing greater surface area. The walls may be gently sloped or vertical.

Shallow/low form Shallow/low form evaporating dish from Cole-Palmer
Standard/high form Standard/high form evaporating dish from Cole-Palmer
Vertical walls Evaporating dish with vertical walls from Cole-Palmer

Features

  • Bottoms may be rounded or flat.
  • Limited use labware can be disposable.
  • A few dishes have no pouring lip and may be called crystalizing dishes.
  • Evaporating dishes, usually made from glass, can be graduated or marked with regular measurement intervals.
  • Handles can be extended from the lips of this labware, causing it to be renamed casserole dishes.

References

Cole-Parmer Evaporating Dishes

Thomas Scientific Evaporating Dishes

eHow -- Uses of an Evaporating Dish

Image credits:

Schott North America Inc.