The 9610 liquid auto-injector eliminates the need for manual syringe injections. It provides multiple bursts of your sample into the analyzer (not to be confused with the model 210). It has accurate and repeatable sample introduction eliminating possible human error when introducing the sample into the analyzer. The Model 9610 is used when performing Total Sulfur, Total Nitrogen, or Total Chlorides analyses with Model 2010L, 2020L, and 9600L.