To know mercury concentrations is of great impor- tance because of the toxicity of mercury and its compounds. Mercury analysis has gained an increa- sed importance for the analyst in order to fulfill the actual requirements demanded by legal regulations. Whether samples should be analyzed only occasi- onally or if there are large quantities of samples to be done every day, the LabAnalyzer 254 is the right instrument. It is ready to go without time consuming preparations. A complete analysis cycle time is in a minute range. Operation of the LabAnalyzer 254 is very simple. The user is guided through his work step by step. The accuracy of the measurement results in the range of 10 ppt up to 10 ppb is outstanding.