Multifunction water tester/TDS(total dissolve solids)

Multifunction water tester/TDS(total dissolve solids)
The instrument shown is a multifunction water quality tester, also known as a pH, TDS, and EC meter.
Function: It is used to test the quality of water by measuring several parameters, including pH (acidity and alkalinity), Total Dissolved Solids (TDS), Electrical Conductivity (EC), and temperature. Some models can also measure salinity.
Features: The device is a portable, pen-type meter with a digital display. The packets included in the image are pH buffer powders, which are used to calibrate the meter for accurate pH readings.
Applications: This type of tester is suitable for various uses, such as monitoring drinking water, aquariums, and water used for gardening or aquaculture.