High performance portable turbidity meter for process control or field measurements. Measurement according to nephelometric method (90 °) ISO 7027. Range: 0 - 1100 NTU / FNU, 0 - 275 EBC, 0 - 9999 ASBC. Accuracy ± 2% (0 - 500 NTU), ± 3% (501 - 1100 NTU). 2 to 5 calibration points with formazine standards. Backlit LCD screen and auto-off function. Stability indicator that recognizes the measurement as stable and expanded memory with a capacity of 100 readings transferable via USB interface. 3x1,5V AA batteries (not included), adapter or USB. Includes case, sample vials, standards (0.02 - 200 - 500 - 1000 NTU, do not include certificate; the standards have a naturally short shelf life) and cleaning cloth. Warranty 2 years