MCT stands for medium-chain triglycerides. This is a form of coconut oil that has been fractionated or separated from the long-chain triglycerides. MCT coconut oil stays liquid at room temperature.
tCheck is able to measure infused MCT coconut oil as well as 'regular' coconut oil.
Make sure your coconut oil or MCT is food grade. Any material that is for external use only will damage the tray.