Liquid Analysis
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What is liquid analysis?
Fluid analysis is the collective name for chemical, physical and/or microbiological methods used to determine the composition and properties of a fluid. The technology is used in industries ranging from process and pulp & paper to water and wastewater treatment, food, energy and HVAC systems.
Common measurement parameters for liquid analyses
Some typical quantities analysed are:
| Parameter | Example of use | Typical sensor/device |
| pH/Redox | Process and environmental monitoring | pH/ORP electrode/transmitter |
| Conductivity | Drinking water,Wastewater treatment plants, CIP processes, concentration determination | 2 or 4 pole electrode, inductive conductivity sensor |
| Turbidity/mud content | Drinking water, process water, breweries | Optical turbidity sensor |
| Dissolved oxygen | Bioprocess, aquaculture | Optical oxygen sensor |
| Free chlorine/ozone | Disinfection of water | Chlorine analyser, photometry |
| Viscosity/density | Oils, chemical fluids, food and liquids | Viscometer |
| temperature | Process and environmental monitoring | Pt100 sensor or thermocouple |
| Refractive index | Concentration measurement, Brix | Refractometer |
| Photometry | Concentration / Colour measurement, product identification | Photometers |
| Oil in water / Oil on water | Environmental monitoring, leak detection | UV Fluorescence / Photometry |
| Sodium / Silicon | Boiler water, steam cycle | Online analyser |
