1) A new four-beam turbidimeter was designed.

2) This article introduces on-line turbidimeter with surface scattered light.

3) The test results show that the technical specifications of the column integrating on-line intelligent turbidimeter meet the design requirements .

4) The study applying scatter light turbidity measurement to design a turbidimeter system.

5) The efforts to improve the accuracy and stability during the design of the scatter light turbidimeter are described in this paper.