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TESSEK Separon SGX C8, SGX C18, SGX RPS, SGX Phenyl - are reversed phase
sorbents differing in functionality and carbon loading. TESSEK Separon SGX C18
is octadecyl modified, the most commonly used sorbent with widest range of
applications including pesticides, amino acid derivatives, peptides,
catecholamines, drugs, pharmaceuticals, steroids, antibiotics, organic acids,
nucleotides and many others. TESSEK Separon SGX RPS is octadecyl modified with
very high carbon content. It offers higher retention in comparison to SGX C18
and is especially suited for ion pair chromatography and separation of
oligosaccharides and other polar compounds in highly aqueous eluents. Due to
its polymeric character it offers good selectivity for polyaromatic
hydrocarbons. TESSEK Separon SGX C8 is an octyl modified sorbent, which offers
lower retention and changed selectivity, advantageous for separation of
catecholamines, peptides and some pharmaceuticals. TESSEK Separon SGX Phenyl
with bonded phenyl groups offers lower retention and changed selectivity useful
for polycondensed aromatic hydrocarbons, polar aromatic compounds and
unsaturated fatty acids. For separation of basic compounds the use of mobile
phase modifiers (e.g. triethylamine) or low pH eluents is recommended.
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