NTU - Turbidity

Turbidity is the measurement of light scatter and is typically reported as NTU nephlometric turbidity units. NTU refers to the 90° angle of measurement used for water quality measurement for drinking water applications. Turbidity measurement is also commonly used for final effluent monitoring to infer suspended solids concentrations affecting water quality. Different types of turbidity instrumentation are available for drinking water and final effluent monitoring.

The microtol is typically installed for flow through measurement of drinking water quality. Primetime (non-harzardous) primary calibration standard, are available for multiple point calibration including a 0.02 NTU set point. Additionally the ProCheck-S solid state validation standard provides a rapid performance test to determine when a complete primary calibration is needed.

The Visoturb sensor is a robust submersible probe that incorporates continuous ultrasonic cleaning, 90° light scatter measurement combined with a backscatter technique used for diagnostics and the very best optical measurement window. Whilst primarily designed for waste water monitoring, digital range selection allows detection from 0.01 NTU and selection of five measurement scales to 4,000 NTU.

MIQ-TC2020XT multi-parameter controller

Microtol turbidimeters for
drinking water monitoring

VisoTurb turbidity

ProCheck-S calibration standard for
validating HF microtol turbidimeters

Product Literature

MicroTol Turbidimeter .pdf (144kb)
On line low cost, flow through Turbimeter for low level measurement

IQ Sensor Net with VisoTurb & ViSolid Sensors .pdf (385kb)
In-line Turbidity and Suspended Solids measurement for water, waste-water and sludge applications [single and multiple sensor and parameter connection]