Overview Get yourself this HM Digital TDS Meter Water Purity Tester from the house of Enigma Solutions which is an inexpensive and convenient digital tool to instantly check your overall water quality. You can easily get to know the quality of your water by using this water purity tester. There are some dissolved solids that come from organic sources such as leaves, silt, plankton and industrial waste and sewage. TDS or Total Dissolved Solids are found in any salt, metal or mineral in the water. Design and Material With the push of a button, this device can tell you the water safety level, which will be displayed on a screen. The lower the TDS level, the purer the water. This tool made of super quality material is a great tool for water filtration and purification, aquariums, pools, spas, and more. It is white in color and has a body made of plastic. Although the case of the tester is made of leather and is black in color. It is highly efficient and accurate due to its advanced microprocessor technology. HM Digital TDS Meter Water Purity Tester saves measurements for convenient reading and recording.