TurbiCheck The compact infrared turbidity meter TurbiCheck is designed to allow fast, precise on-site testing. The unit measures the scattered light at an angle of 90°, as stipulated in EN ISO 7027. The wide measuring range from 0.01-1100 TE/F = NTU = FNU makes the instrument suitable for various applications, ranging from drinking water to waste water. As infrared light is used for measurement, the instrument can be used to test both coloured and colourless liquids. Delivery Content: TurbiCheck turbidity meter as described above, complete with 4 turbidity standards <0.1, 20, 200 and 800 NTU, battery and test vials, in case.