SPE is a column chromatographic analysis process bearing much similarity to high performance liquid chromatography (HPLC) in the mechanism of separation and choice of reagents and solvents. In the past, monodisperse sorbents are only used in high-end chromatography and analysis columns. Under optical microscope, the first generation silica sorbents are irregular in shape and the second generation spherical polymer particles are broad in size distribution. The new generation Uni series SPE sorbents by Nano-Micro Tech is spherical with a uniform particle size. They also have a high surface area and high density of functional groups on the particle surface. Optical microscope of various SPE sorbents Particle size distribution of Uni SPE sorbent (Green) and competitor`s polymer SPE sorbent (Red) Nano-Micro Uni series columns have advan…