Advantages: Freeze drying is a process by which the water in the sample is frozen at very low temperatures (mostly at -20(C to -40(C) and then sublimed under vacuum and still at low temperature (below 50(C).
(Freeze drying; is; a process by which the water in the sample is frozen at very low temperatures) (the water in the sample; is; frozen at very low temperatures; L:a process) (mostly at -20(C to -40; sublimed; T:then)
Freeze drying the water in the sample mostly at -20(C to -40
is is sublimed
a process by which the water in the sample is frozen at very low temperatures
frozen at very low temperatures L:a process
T:then