SiliaChrom® SB C18 - Melamine In Food
SiliaChrom® SB C18 is specially designed for separation of polar compounds from low to medium pH. In this case, analysis of melamine in food sample is an excellent example of a highly polar compound for which it is very difficult to obtain a good peak symmetry.
SiliaChrom® C18 reverse phase functionalization is completely identical to the SB C18 equivalent. This reverse phase is grafted on a 300 Å pore size spherical silica to separate or purify larger molecules.
SiliaChrom® SB C18 has the particularity that the silane carries two different functions:
• The C18 Hydrophobic function
• Transversal hindered isopropyl groups which protect the surface from an acidic attack.
This chemistry guarantees the stability of this reverse phase in very low pH (up to 0.8)