Versatile Water Quality Applications Widely Applications, it can used for water quality detection ,liquor marking industry ,environmental for protection, scientific research, industry and sewa disposal. LED display screen with backlight, you can easily read figures druing day and night. positioning structure and high optical system can effectively ensure the accuracy and repeatability of measured values. Simple operation and suitable measurement with a cost performance ratio, more suitable for use in all walks of life. The instrument is calibrated by turbidity standard solution , and NTU is used as turbidity measurement unit, high accuracy, Manufacturer: GQNBLVHZUPDM