EFV-12 Plus solve the pipe rack limitation of the traditional nitrogen Concentrator instrument, equipped with a special macroporous sample tube bracket, which is compatible with beaker, centrifuge tube and conventional test tube for concentration at the same time. It has a series of performance advantages, such as grouping control of nitrogen Concentrator channel, the nitrogen blowing needles can be lifted up and down with one key, 5-inch high-definition touch screen control, etc., it can improve the concentration efficiency of batch samples.