Why Does Vacuum Drop When Feeding a Molecular Distillation System? 

Laboratory Glass Molecular Distillation

If a molecular distillation system reaches deep vacuum when empty but the pressure rises after feeding starts, this does not automatically mean the vacuum pump is faulty. The most common reason is simple: once feed enters the wiped-film evaporator, water, solvent and other volatile components begin to evaporate. This creates a vapor load that the […]