[ BONUS 3 in 1 Digital TDS Temperature Conductivity Meter] Hofun 3 in 1 TDS, Electric Temperature Conductivity Meter features the most advanced and updated technology. Three different measurement needs can be fulfilled by one digital water quality tester. Not only been convenient for you, but also saves your time and money, absolutely a helpful kit for your life.[ RELIABLE TDS METER -- ACCURATE QUICK] Equipped with premium quality titanium alloy probe, Hofun TDS water quality tester enables quick and convenient test. Put the probe into water and LCD shows accurate results in seconds. In addition, advanced and reliable systerm ensures measurement accuracy, 0-9999 ppm, making it fits multiple usages, hydroponics meterIdeal water testers for drinking water test, swimming pool, laboratory, aquarium, RO/DI Water etc.[ EASY READING BIG BACKLIT LCD DISPLAY QUALIFIED WATER TESTER ] Hofun water quality test meter for hydroponics ec meter with Big Backlit LCD is far superior than other ones, which allows wider angles of data reading and night reading. Besides, Red backlight ( ppm figure over 40 ) means high level ppm figure. Green backlight ( ppm figure below 40 ) indicates TDS figure qualified for direct drinking water (Notes: International standard adopted TDS figure 40 as a dividing line).[ EASY OPERATION ENERGY SAVING ] Hofun ppm meter allows one button operation. Just turn TDS meter on and stir water gently, then stabilized readings will be auto-locked on LCD in seconds, and the tds ppm meter will shut off automatically if without operation over 2 minutes.[ HIGH QUALITY TDS METER] Hofun water quality test meter is manufactured under extra high standards and of excellent quality. Thus we have absolute confidence of our water test meter.