A ka c’a la, jalen min bɛ kɛ ni fɛnɲɛnamafagalan ye, o ka fɛnɲɛnamafagalan hakɛ bɛ 10 Pa ni 1000 Pa cɛ, ni nafa kɛrɛnkɛrɛnnen bɛ nɔ bila fɛnw cogoyaw ni u baarakɛcogo fɛɛrɛw la. Nin vacuum range in nafa ka bon sublimation rate teliya la ani ka jalen kɛcogo ɲɛ.
Vacuum freeze dryer ka vacuum hakɛ bɛ tali kɛ gazi kɔnɔna tansiyɔn dɔgɔyali hakɛ la ka tɛmɛ kɛnɛma fiɲɛ tansiyɔn kan. O paramɛtiri in nafa ka bon kosɛbɛ minɛnw baaracogo ɲuman na ani u jalen nɔ na. Nka, nafa kelen ni basigilen tɛ sɔrɔ jalen jalen ka fɛnɲɛnamafagalan hakɛ la, bawo a bɛ nɔ bila fɛn caman na, i n’a fɔ minɛn suguya, a ɲɛfɔcogo, a kɛcogo ani a baarakɛcogo.
