Documentation:Standard Operating Procedures for Thermolyne 62700 Muffle Furnace
- Please obtain proper training from the FNH teaching lab technician Imelda Cheung (Imelda.Cheung@ubc.ca) prior to using the muffle furnace.
- A video https://www.youtube.com/watch?v=N5kXnmG8MPg is also provided for review purpose and can be viewed as needed.
- Place the large piece of brick in the fume hood (the purpose is to ensure the door of the muffle furnace can be open in the fume hood).
- Place the Muffle Furnace in the fume hood (the ashing process will produce strong odour) a day prior to experiment.
- Label the crucibles with lids with pencil and place in the main chamber.
- Plug in the furnace, turn on and pre-ash the crucibles at 550oC overnight.
- Turn off furnace and wait until temperature drops to 250oC before opening the chamber.
- With a pair of tongs, remove the crucibles carefully from the furnace chamber to a desiccator to cool.
- It is important not to leave fingerprint as it will significantly affect the weight.
- Record the weight of the empty crucible without lid and place samples.
- Place the crucibles with samples in the furnace chamber.
- Plug in the muffle furnace and turn on to ignite at 550oC for 18 hr.
- Repeat Steps 7 – 8 and record weight of ashed samples in the crucibles.
- Unplug muffle furnace and remove the furnace and the brick from fume hood.
- To reserve a time to utilize the muffle furnace, please visit https://www.qreserve.com/r/resource/QR00182673