Brand: WTW
Features:
- Includes calibration standard kit (0.02-10-1000 NTU) and accessories 2 empty cuvette (28m), cleaning tissues, batt
- Portable use for all water testing applications include drinking water, wine industry, process control
- Optional LabStation LS Flex/430 with software package for GLP compliant data export
- Suitable for drinking water
Thomas Scientific
Release Date: 12-03-2017
Details: Nephelometric or transmittance measuring-the nephelometric measurement at 90° scattered light is advantageous for lower turbidity, whereas the transmission measurement at 180° is beneficial for medium to high turbidity values: With increasing turbidity, restray and scattering effects between particles are growing bigger. The reduction of light intensity in this case leads to a more accurate result than a 90° nephelometric measurement. Therefore, lab meters for high values are equipped with several measuring options: ratio modes calculate the final result from different measured angles. For ratiometric measurements, there is no specific standard method to be followed; rather, procedures are established by the application or industry. White light has a higher sensitivity for small particles, however, the inherent coloration of the solution has a stronger disturbing effect in this case. The IR measurement is required by DIN ISO, the white light measuring by US EPA.
