Macherey-Nagel NANOCONTROL NANOTURB turbidity standard with 4 tubes (1,4,100,400 NTU), for the nephelometric turbidity calibration of NANOCOLOR

Turbidity standard with 4 test tubes (1, 4, 100, 400 NTU) for the nephelometric turbidity calibration for NANOCOLOR spectrophotometers and PF‑12Plus. Secondary standard for equipment monitoring inspection according to ISO 9001.