A Porcelain Evaporating Basin Regular is a shallow, circular dish used in chemistry and biology labs to evaporate liquids, usually to concentrate a solution or isolate a solid. The regular-sized evaporating basin is typically made of porcelain, ceramic, or borosilicate glass, and has a flat bottom with gently sloping sides to allow for easy and even evaporation.

It is used in conjunction with a Bunsen burner or a hot plate to gently heat and evaporate the liquid. The regular-sized basin is commonly used for small-scale experiments and can hold a small volume of liquid, usually less than 100ml. The basin can be easily cleaned and reused for multiple experiments, making it a cost-effective and versatile tool for lab work.