Columns/YMC*Gel

Packing materials that YMC produces are of two types, spherical and irregular, and both are rich in variety. Spherical packing materials have a higher homogeneity for packing than irregular packing materials,so they have higher efficiency, high reproducibility of packing and, low pressure drop. Irregular packing materials are used for preparative column and open column chromatography.

The smaller the particle size of both spherical and irregular, the higher efficiency is obtained, but the larger the pressure drops.

	Preparative spherical packing materials Spherical packing materials come in many types of bonded phases and bare silica gel. A wide range of particle sizes are available to as large as 150um. Their quality are controlled tightly.
	Preparative irregular packing materials Irregular packing materials are of bare silica gel only. They are widely applicable, from semi-preparative isolation to industrial preparation. They can be used for from semi-preparative to preparative chromatography. Their quality are consistent from lot to lot.