Seawater neutralization concentration test device

A seawater neutralization concentration test device is composed of a neutralization concentration device, an instruction control device, a polytetrafluoroethylene tube and a control line. The neutralization concentration device is composed of an ultrapure water storage bottle and a sample bottle of a liquid storage tank, two injection pumps connected through a polytetrafluoroethylene tube, a peristaltic pump, a capture column, an electric two-position six-way large-volume sample collecting valve, a neutralizer, an electric two-position six-way sample concentration valve, a chromatographic system and a controller. By operating the controller, sample flow is controlled, a current is neutralized, the neutralization concentration process of a sample is finished on line through a pipe and a circuit, and the sample is supplied to the chromatographic system to finish analysis. The seawater neutralization concentration test device is simple in structure, convenient to operate, high in practicality and low in cost and improves accuracy. The seawater neutralization concentration test device is suitable for analysis experiments of some samples which are very high in saline alkali degree but are very low in ion content.