Eutech offers a wide range of pH meters that measure pH values in various educational, laboratory and industrial applications. These include the pHTestr™10, 20 and 30 pocket testers, portable meters CyberScan Series pH 300, pH 310, pH 11 and pH 110, EcoScan pH 6 and the CyberScan bench meter series 510, 1100, 2100, 1500 and the colour touchscreen research-grade series 6000.
Conductivity is used widely to determine the level of impurities in water supplies for domestic consumption as well as industrial use. Industries that employ this method include the chemical, semi-conductor, power generation, hospitals, textile, iron and steel, food and beverage, mining,
electroplating, pulp and paper, petroleum and marine industries.
The total TDS is a mass estimate and is dependent on the mix of chemical species as well as the concentration while conductivity is only dependent on the concentration of chemical species. Some applications require the measurement of total dissolved solids (TDS) in mg/l, parts per million (PPM) or parts per thousand (PPT). The TDS concentration can be obtained by multiplying the conductivity value with a factor which is empirically determined. Eutech offers meters that allow the direct reading of TDS values. These include the TDS testr™ series, ecoscan TDS 6, cyber scan standard portables con 11, con 110 and waterproof portable con 410. Bench meters for advanced level laboratory research are the cyber scan con 510, con 1500 and color touchscreen research-grade con 6000.
Salinity measurements are common in industries like agriculture, aquaculture, hydroponics, food, pools and spas where it is necessary to monitor the salt level constantly. The values are usually read in parts per thousand (PPT) or % (1 PPT = 1 gram per litre).
The Eutech salinity pocket testers salt testr™ series and eco scan salt 6 are specially developed to provide direct readings in these applications.
Do stands for dissolved oxygen, which is the measure of amount of gaseous oxygen dissolved in a solution. In theory, the amount of do in a solution is dependent on 3 factors, namely temperature, salinity and atmospheric pressure. The measurement of do requires a special do electrode that is made up of an anode, a cathode, electrolyte solution and a gas permeable membrane.
Turbidity refers to the concentration of undissolved, suspended particles present in a liquid measured in nephelometric turbidity units (NTU). It is important to note that turbidity is a measure of sample clarity and not colour. Water with cloudy or opaque appearance will have high turbidity, while water that is clear or translucent will have low turbidity. High turbidity value is caused by particles such as silt, clay, microorganisms, and organic matter. By definition, turbidity is not a direct measure of these particles
but rather a measure of how these particles scatter light.