ASAP 2020 Plus can be used to characterize zeolites, MOFs, and a wide variety of porous and non-porous materials. It is a high-performance analyzer for measuring surface area, pore size, and pore volume, and delivering superior accuracy, resolution, and data reduction. Two independent vacuum systems of it permit simultaneous preparation of two samples while analyzing another. Continuous saturation pressure monitoring and unique isothermal jacket cold zone control provide a stable thermal environment for both saturation pressure and adsorption.