Process Instruments (Pi) is known for making the best online Water Quality Analyzers on the market. However, did you know that…

…Pi also supplies standalone laboratory based analyzers for determining coagulant dose in 5 minutes?
…Pi also manufactures and supplies portable versions of some of their online water analyzers?

This Focus On will highlight some of the features of Pi’s LabSense and ChargeSense Laboratory Charge Analyzers and Pi’s UV254 Portable Meter.


LabSense 1 Charge AnalyzerPi’s range of LabSense Laboratory Charge Analyzers are an essential coagulation optimization tool for water treatment. LabSense allows the user to determine the ideal coagulant dosage needed to achieve optimum NTU and TOC reduction in typically less than 5 minutes, earning it the description “5 minute jar tester”.

How does it work?

Based on streaming current technology, the LabSense titrates a sample of raw water to determine the dose of coagulant required to achieve charge neutralization. The LabSense, which has been shown to be an accurate approximation for coagulant dosage, is proving an invaluable tool for a Water Process Scientist with the responsibility to optimize coagulant dosage often on rapidly changing water sources where jar testing can just take too long.

For more information about Pi’s LabSense Laboratory Charge Analyzer, click here.
ChargeSense Charge Analyzer


Pi’s ChargeSense Laboratory Charge Analyzer is an essential tool for papermaking allowing fast determination of wet end charge demand.

How does it work?

ChargeSense measures the streaming current produced by colloidal/dissolved species in a sample taken from various points on the wet end of the papermaking process, and allows for a titration with a poly-electrolyte titrant to bring the sample’s charge to zero. The charge demand result is then expressed as either microequivalents per litre (µeq/L) or parts per million (ppm).

For more details about Pi’s ChargeSense Laboratory Charge Analyzer, click here.

UV254 Portable

UV254 PortableWith the UV254 Portable range of UV254 hand held meters you get a simple and reliable means of testing any water for UV transmittance (UVT) and UV absorbance (UVA). Used to provide quick (less than 1 min) information on site, the UV254 Portable provides an invaluable tool to water treatment engineers, essential for verifying an online analyzer reading or as an independent measurement.

How does it work?

The Pi UV254Sense Portable for the measurement of UV254 absorbance and UV254 transmission can provide testing in both units of UVT and UVA, and any of the meters can be equipped with our optional battery pack feature, allowing the meter to truly go anywhere, anytime.

The patented Split-Sensor technology also allows for the unique ability to remember the meter’s calibration, eliminating the need to calibrate (zero) the meter to a known pure (DI) water source before taking a measurement. This improves ease of use in the field for performing rapid grab sample testing of various water sources.

For more information about Pi’s UV254Sense analyzers, click here.

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