However, in recent
years, Aminex resins such as HPX-42A provided by Bio-Rad (e.g. Kluepfel et
al. 1992) or the Carbopac PA1 from Dionex, are capable of separating
oligosaccharides with degrees of polymerization (DP) of 5 to 15 or perhaps
more. When used in conjunction with a pulsed amperometric detector, highly
sensitive and quantitative determinations of action patterns can be obtained
with successive samples.