Brand new, straight from the factory MoSi2 (Super) elements for the Vita 6000MS line of furnaces.
What is the difference between the 1800 grade and HT grade?
Kanthal HT material is the highest grade MoSi2 material on the market, designed for highly cyclic operations such as those used in dental sintering applications. The end result is longer life time as well as less contamination in your Zirconia product. More information is available in the specification sheet.
Kanthal 1800 is a medium-grade material that still offers a good life and good performance, but will not offer as long of a service life as HT.
If you are experiencing issues with contamination altering the coloring of your Zirconia, choose HT.