https://www.raykolgroup.com/products/auto-nitrogen-evaporation-system/ As one of professional and experienced nitrogen evaporator suppliers, RayKol Automated nitrogen evaporation system is specialized in simultaneous and parallel evaporation to a large batch of samples. The nitrogen evaporator principle is using nitrogen gas flow to disrupt vapor pressure above the sample surface to achieve evaporation while samples are heated by water bath. And the gas flow from nitrogen gas evaporator can be adjusted to maintain optimal distance or blowing angle toward samples for efficient vacuum evaporation. Contact us for evaporator nitrogen price!