Drying is the process of the removal of the water or solvents by the process of evaporation; hence the output of dryer must be a solid material in the form of any defined structure or powder. To achieve the dried output the heat is applied to evaporate water or solvents. What if I say we have to dry the heat sensitive material; how will dry them if heat is applied to evaporate the water or solvent contents then material itself can get harmed as being the heat sensitive material, hence the special provisions required to dry such heat sensitive materials. To dry such heat sensitive materials it’s required to lower down the environmental pressure, as the water and many solvents reach to boiling point at lower temperature with the pressure is lower by creating the vacuum, hence this process is known as vacuum drying (#vacuumdrying). The marriage of heat and vacuum together have proven as very effective source of the drying at relatively lower temperature, the moisture content in the mate