JULABO open heating bath circulators with bath tanks made of stainless steel, Plexiglas, or Makrolon are designed for internal and external temperature applications. They are primarily used for internal temperature control directly within the bath tank. External closed systems may be connected via the integrated pump connections. Models are available with a variety of bath sizes and other functional characteristics. A variety of bath inserts for laboratory glassware, bath covers, and adjustable floors are available as accessories. Common applications include temperature control of measurement cells, photometers, and samples; heating of glass flasks; and temperature testing of food, luxury articles, and materials.