Controlled Pore Glass (CPG) has been widely used as a solid support for oligo synthesis for several decades. LGC, Biosearch Technologies’ has perfected CPG manufacture for maximum oligo purity and yield. Our advanced CPG production techniques improve control of particle size and shape, pore size, pore volume, and specific surface area. These physical parameters influence solution exchange behaviour, ligand loading and distribution, and reaction kinetics to increase the efficiency, purity, and reproducibility of syntheses. LGC, Biosearch Technologies’ Prime CPG is considered to be the gold-standard solid support used in all sectors of the market. CPG with an attached aminopropyl or long-chain alkylamino linker, ready for functionalisation, is available for research purposes in a variety of pore sizes. In general, large scale oligo synthesis for therapeutic applications requires high loaded 500-600 Å and small to medium scale synthesis for diagnostic or research use require higher pores sizes.