Calcium is an alkaline-earth metal that is an important component of the cell walls of aquatic plants, and of the bones and shells of aquatic animals.
Calcium ions find their way into water as it flows over rocks that contain calcium, such as limestone and gypsum. In freshwater, the concentration of calcium ions is generally in the range of 0 – 100 mg/L. If the concentration is less than 5 mg/L, then the ability of that water body to support life is dramatically decreased. Low levels of calcium can be a factor in oligotrophy. An oligotrophic lake or river is an unproductive one because of low nutrient content. An indicator of an oligotrophic condition is very clear water. Seawater contains calcium ions at levels of around 400 mg/L.
Aquaread’s calcium sensor takes the form of a calcium ion specific electrode (ISE) that plugs into our range of Aquaprobes. Aquaprobes are multiparameter water testing devices that measure standard parameters and accept optional electrodes, so that you can tailor the device to your water quality testing needs. Aquaread’s calcium probes are primarily designed to be used in the field. The AP-7000 is our latest model and is self-cleaning, designed for long term deployment. The AP-5000 is a portable device that has the capacity for up to 4 optional sensors on top of the standard parameters. The AP-2000 is handheld and extremely portable, yet still allows 2 optional sensors to be added.
Calcium meters are used for measuring calcium in water. The concentration of calcium in water is also known as water hardness. Hard water contributes to scaling in boilers and industrial equipment. Measuring calcium in water is important in industrial settings in order to prevent costly breakdowns that can be caused by limescale. Water hardness also affects fish because it influences osmoregulation, which is their constant internal regulation of body fluid concentration.
High levels of calcium in water can trigger diseases in fish. Calcium meters can be used in fish farming to ensure the levels are maintained at an optimum place, and can also be used for measuring calcium in water that is designed for drinking.
If you would like any more information about TDS meters and other total dissolved solids testing equipment, or water quality monitoring in general, please contact us. Click here to see our product range.