| abstract |
The invention relates to a flow path system of a full-automatic tester for anionic surfactants in water, which consists of a water sample treatment system, a washing and constant volume system, an impurity and moisture membrane filtration and separation system and a waste liquid collection and separation system; the water sample treatment system comprises a water sample cup, a pure water cup communicated with the water sample cup through a pipeline, a No. 1 three-way valve sequentially communicated with the water sample cup through an upper opening of a No. 2 three-way valve, a methylene blue reagent cup and an injection pump communicated with the water sample cup through a pipeline; the flow path system has the advantages of cross contamination prevention, fast operation, compact structure and the like. |