Many wastewater laboratories are tasked with determination of total sulfur species. To achieve this, two different analytical techniques and detection methods are required. Sulfite, sulfate and thiosulfate are determined using conductivity detection while sulfide is determined using electrochemical detection. Traditionally, this requires either two separate instruments or a replumbing of the system, a process that wastes valuable labor and reequilibration time. Using the ICS-3000 dual-detection capabilities, determination of total sulfur species can now be performed from a single injection. The data below shows the determination of total sulfur from one injection using the dual channel ICS-3000 with conductivity and electrochemical detection. In the figure below, sulfide is determined from Channel A by electrochemical detection while sulfite, sulfate and thiosulfate are determined using conductivity detection. 
Increased Throughput and Time savings Previously, laboratories needed a separate system or had to switch applications by converting the system from one analysis to another. This wastes time because it requires changing the eluents, columns, and detectors in addition to system reequilibration to the new conditions. Using the ICS-3000 simultaneous system, a time savings of approximately 50% is realized since changing the analytical conditions and reequilibration are no longer required. This saves valuable labor costs so that users can spend time analyzing data, not setting up a new application.
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