The Hewlett Packard HP 5890 Series II Gas Chromatograph is a chemical analysis instrument used for separating chemicals in a complex sample. This instrument uses a flow-through narrow tube known as the column, through which different chemical constituents of a sample pass in a gas stream (carrier gas, mobile phase); the constituents move at different rates depending on their various chemical and physical properties and their interaction with a specific column filling, called the stationary phase.
HP 5890 series II and 5890 series II Plus GCs can be used reliably to analyze chemical components of complex samples in industry, toxicology, drug screening, food safety, forensics, as well as general chemical analysis.