IMPAQ™ (the sferical alternative) is a premium grade angular silica designed for High Performance Liquid Chromatography (HPLC) and other applications where consistent high purity and narrow distribution of pores and particle dimensions are required. It is the only non-spherical product performing successfully in large-scale HPLC applications. IMPAQ™ is a fully porous gel in which surface area, porosity and rigidity are optimized for loading capacity and mechanical stability.
Particle Size Preparative Range 5-10-20-40 µm
Pore Size Range 60-100-200Å
Available functional Silica Amino, Cano, Diol, C1, C4, C8, C18 and others
Specific Surface Range:
Pore diameters of 60, 100 and 200 Å are available to accommodate a
wide range of molecular weights. Large molecules experience better penetration
in larger pores, resulting in better resolution. Small pores, on the other
hand, are responsible for higher particle stability and surface area, thereby
providing greater loading capacity. Matching the molecules to be separated
to the pore size of available media will therefore optimize chromatographic
conditions and maximize throughput.
* IMPAQ™ has the highest available surface area (600 m2/g for 60 Å)
compared to other silicas resulting in improved loading capacities.
* Mechanical strength of IMPAQ™ is comparable to spherical silicas,
allowing for packing and multiple re-packing under high pressure. Packing
instructions will be supplied.
* High purity is carefully controlled and documented preventing interactions
between media and solute.
* IMPAQ™ is the most economical silica for large-scale HPLC applications.
* IMPAQ™ is available as bare silica as well as bonded with amino, cyano, diol, C4, C8, C18 and many other functionalities.