It is important to test the salinity of water for many reasons. Salinity meters most commonly measure the salinity of water in 4 main industries: Salinity is found in different bodies of water and is always changing due to factors such as runoff or inflow and outflow of fresh or saltwater.

See also: Ocean §Salinity Full 3 minute NASA video Feb 27,2013 The NASA Aquarius instrument aboard Argentina's SAC-D satellite is designed to measure global sea surface salinity. This movie shows salinity patterns as measured by Aquarius from December 2011 through December 2012. Red colors represent areas of high salinity, while blue shades represent areas of low salinity. automatic up to five points with seven memorized standards (0.00 μS/cm, 84.0 μS/cm, 1.413 mS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, 111.8 mS/cm)From the above data, slightly saline water is sometimes and at some places taken similarly as freshwater as its salt content is bearable, being just 1000-3000 ppm. Similarly, moderate t Chen, C.; Beardsley, R.C.; Limeburner, R.; Kim, K. Comparison of winter and summer hydrographic observations in the Yellow and East China Seas and adjacent Kuroshio during 1986. Cont. Shelf Res. 1994, 14, 909–929. [ Google Scholar] [ CrossRef] Instrument Choice Scientist Tip: The temperature of the substance you are testing for salinity will also impact the results displayed

Broadbent, H.A.; Ivanov, S.Z.; Fries, D.P. Fabrication of a LCP-based conductivity cell and resistive temperature device via PCB MEMS technology. J. Micromech. Microeng. 2007, 17, 722. [ Google Scholar] [ CrossRef] CastAway CTD—Handheld Deployable CTD with Integrated GPS and LCD Display. [EB/OL]. Available online: https://www.sontek.com/castaway-ctd/ (accessed on 30 May 2022).a b c Fox-Kemper, B.; Hewitt, H.T.; Xiao, C.; Aðalgeirsdóttir, G.; Drijfhout, S.S.; Edwards, T.L.; Golledge, N.R.; Hemer, M.; Kopp, R.E.; Krinner, G.; Mix, A. (2021). Masson-Delmotte, V.; Zhai, P.; Pirani, A.; Connors, S.L.; Péan, C.; Berger, S.; Caud, N.; Chen, Y.; Goldfarb, L. (eds.). "Ocean, Cryosphere and Sea Level Change" (PDF). Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK and New York, New York, US: Cambridge University Press. 2021: 1211–1362. doi: 10.1017/9781009157896.011. ISBN 9781009157896. CTD 115M—Sea & Sun Technology. [EB/OL]. Available online: https://www.sea-sun-tech.com/product/multiparameter-probe-ctd-115-memory/ (accessed on 30 May 2022). This handheld Fowinker saltwater meter has an LED LCD dual display monitor. The dual display monitor will give you a clear visual reading of your pool’s salinity level and water temperature. It has a sensitive reaction to samples which gives out high accuracy reading. Testing salinity is vital in surface waters and aquaculture, as different aquatic organisms have different optimal levels to survive. Organisms living in saltwater have an optimum salinity level of 40 ppt, and freshwater organisms cannot tolerate salinity levels exceeding 1 ppt.

The measurement unit for electrical conductivity is called Siemens (S). The units display Milli Siemens per centimetre mS/cm or Micro Siemens per cm μS/cm.Seawater typically has a mass salinity of around 35 g/kg, although lower values are typical near coasts where rivers enter the ocean. Rivers and lakes can have a wide range of salinities, from less than 0.01 g/kg [3] to a few g/kg, although there are many places where higher salinities are found. The Dead Sea has a salinity of more than 200 g/kg. [4] Precipitation typically has a TDS of 20 mg/kg or less. [5] Salinity varies from place to place in the oceans, but the relative proportions of the most major dissolved constituents remain virtually constant. Even though there are smaller quantities of other ions in seawater (e.g., K +, Mg 2+, SO 4 2-), sodium (Na +) and chloride (Cl -) ions represent about 91% of all the seawater ions. Freshwater has much lower levels of salt ions. 2 Because of this, many pool owners have opted to convert their swimming pools to saltwater systems. Although saltwater swimming pools are considered easier to maintain, you will still need to monitor your water to ensure its correct salinity. Pucciarelli, G. Wavelet analysis in volcanology: The case of phlegrean fields. J. Environ. Sci. Eng. A 2017, 6, 300–307. [ Google Scholar] Dukhovskoy, D.S.; Yashayaev, I.; Proshutinsky, A.; Bamber, J.L.; Bashmachnikov, I.L.; Chassignet, E.P.; Lee, M.; Tedstone, A.J. (2019). "Role of Greenland freshwater anomaly in the recent freshening of the subpolar North Atlantic". Journal of Geophysical Research: Oceans. 124 (5): 3333–3360. Bibcode: 2019JGRC..124.3333D. doi: 10.1029/2018JC014686. PMC 6618073. PMID 31341755.