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The GF Signet 4150 Turbidimeter measures turbidity via a 90-degree light that reflects particles as they flow through the small-volume, low-flow glass cuvette.

Air bubbles are eliminated in the cuvette by adjusting the backpressure valve on the outlet tube.

The cuvette is located in a watertight dark chamber for continuously accurate online measurement.

A replaceable desiccant pack provides a stable environment that ensures reliable measurements.

Simple and fast calibration can be accomplished in less than five minutes by placing the glass cuvette from the measuring chamber into the cuvette holder, while the inlet and outlet tubing is still connected.

The inexpensive calibration standard allows for dry and multiple system calibrations without mixing chemicals.

After calibration, the unit is up and running with a simple insertion of the glass cuvette into the measuring chamber.

The 4150 is available in two measuring ranges.

The 0 to 100 NTU version is for low-range applications such as drinking water.

The 0 to 1000 NTU range can be used for various applications, including raw water and wastewater.

Georg Fischer

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