The Heat-On block system is the safest, fastest, most efficient way to heat and stir a round bottom flask from 10ml to 5 litres.

Heat-On blocks have an innovative fluoropolymer coating that offers outstanding chemical resistance to most solvents, acids and alkalis. The coating also extends the product life and is easy to clean.

Heat-On blocks are also available with a lower cost anodised finish if preferred.

Features include:

  • Replace messy oil baths, heating mantles and avoid spills.
  • Make your chemistry safer, cleaner and faster.
  • Solid aluminium blocks provide even heating.
  • Lightweight design allows rapid heating.
  • Unique well design eliminates cracking of flasks.
  • Blocks feature two probe holes and optional lifting handles.
  • Use up to 260C.
  • Also accepts Florentine Flasks.


  • Heat-On Video