The S 155-A anion chromatography system is a table-top ion chromatograph. It is the economical solution for a fully functional anion chromatography system as one integrated pre-configured unit. The S 155-A contains an isocratic ion-chromatography pump, a manual injector, a column-oven, an in-line suppressor and a conductivity detector. For low sample throughput and educational purposes, the S 155-A ion-chromatograph is the entry level system, without compromising analytical performance. The consideration that the user could make for any options for the S 155-A ion chromatograph is to choose an additional eluent selection valve and/or inert gas supply connection for the eluent bottle(s).