#Desflurane has a saturated vapour pressure of 664 mm of Hg @ 20 degree C and a boiling point of 22.6 degree C
This is less than other agents; thus it requires a specific vaporizer
The Tec Mk 6 vaporizer is a plenum vaporizer and is designed for desflurane.
It operates at 39 °C and 2 atmospheres (All other vaporizers operate at atmospheric pressure and temperature).
It takes 5–10 minutes to warm up to the correct temperature.
It will not operate until the vaporisation chamber has reached 39 °C.
It needs an external power supply, and it has a 9 V battery as a backup in case of mains failure.
Unlike other plenum vaporisers, the Tec Mk 6 vaporizer is designed so that the fresh gas flow does not enter the chamber. The desflurane vapour is added to the fresh gas flow as it leaves the vaporiser.
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Reference: Al-Shaikh B, Stacey S. Essentials of Anaesthetic Equipment, 2nd edn. Edinburgh: Churchill Livingstone, 2002