Polymer Laboratories (PL), now a part of Varian, Inc., offers the most complete range of rigid polymeric media for HPLC applications. PL's polymeric particles are available with a range of orthogonal chemistries, reversed phase and weak and strong anion and cation exchange functionalities for 2D HPLC as well as conventional analytical separations. A range of high performance packed columns is available for capillary/micro/analytical HPLC in sizes from 300m ID up to 7.5mm ID for applications in the areas of proteomics, combinatorial chemistry, high throughput screening and ADME. The range of pore sizes, 100Å, 300Å, 1000Å and 4000Å provides the optimum pore size for the analysis of small molecules through to the largest biological macromolecules. In addition, PL manufactures columns with monodisperse sulfonated packings for carbohydrate, organic acid and alcohol analysis by ligand exchange.
For use in Pharmacopeia methods, PL manufactures macroporous polystyrene / divinylbenzene HPLC materials in a full range of pore and particle sizes plus sulfonated low crosslinked polystyrene / divinylbenzene cation exchange materials with the full range of counter ions.