MILWAUKEE Mi 415 Portable Turbidity Meter

The cloudy appearance of water ( called Turbidity) is caused by suspended material. The unit of measure adopted by the ISO Standard is the FNU ( Formazine Nephelometric Unit) and by EPA is NTU ( Nephelometric Turbidity Unit) . The other two methods used to test for turbidity and their measurement units are the JTU ( Jackson Turbidity Unit) and the Silica unit ( mg/ L SiO2) . See the conversion table of these methods and their units for your reference Range : 0.00 to 50.00 FNU; 50 to 1000 FNU Resolution : 0.01 FNU; 1 FNU Accuracy : ± 0.5 FNU or ± 5% of reading, whichever is greater Method : detection of scattered light Light Source : high emission infrared LED Light Detector : silicon photocell Environment : 0 to 50° C / 32 to 122° F; max RH 100% Battery Type : 1 x 9V Auto-off : after 5 minutes of non-use Dimensions : 192 x 104 x 52 mm Weight : 380 g _ _ _ _ _ _ _ _