Check the listing for details. Digital pH Meter PPM,TDS&EC Water Quality Tester,±0.01pH for Home Lab WHOLE SALE. Condition: New. Listed at 8.99 USD. pH /TDS Meter Combo, 0.05ph High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Household Drinking, and Aquarium WHOLE SALE Advanced Features [PH Meter] The pocket size digital PH pen is equipped with (ATC) auto temperature compensation function. No more need to worry about the temperature of to-be tested liquid. It can accurately determine pH value of the sample at any temperature in a range of 32°F - 140°F (0°C - 60°C). The tester can be calibrated with using Buffer Powder. [TDS Meter] 3 in-1 TDS Meter Digital Water Tester, Accurate&Quick check heavy metal content, soluble salt content and temperature in the water which will be displayed on the screen in ppm (parts per million). [Accurate & Reliable] The PH tester can test quickly and accurately within ±0.01 PH. TDS meter Equipped with premium quality titanium alloy probe, Its measuring range of TDS is 0-9999 ppm with accuracy: ± 2%. It only takes a few seconds to show accurate and stable reading for the result to appear on screen. [Widely Application] The tester kit is designed small and convenient. PH meter and TD&EC meter can test pH balance, ideal for testing drinking water, swimming pools, aquarium, spas, hydroponics, food, wine and beer making and more. Specifications: Type 1 PH Meter Measure Range 0.00 - 14.00 pH Resolution 0.01 pH Accuracy 0.05 pH Calibration Three Points Automatic Calibration Button Power Supply 2 x 1.5V LR44 Button Battery (keep using more than 500 hours) Dimension 155mm*31mm*18mm Weight:50g Type 2 3-in1 TDS EC Temperature Meter Conductivity 0 - 9990 µs/cm TDS 0 - 9990 ppm (parts per million) Degrees Celsius 1.0 - 80.0°C Fahrenheit 32.0 - 176.0°F Accuracy 2% Net weight 51g Size 154 x 30 x 14 mm Tips TDS = Total Dissolved Solids, which is any salt, metal or mineral in the water. Note This ppm meter can't test sea water. Package List 1:1* EC&TDS Meter1* Storage Box Package List 2:1* PH Meter Package List 3:1.1* PH Meter1.1* EC&TDS Meter2.1* Storage Box Package List 4:10* EC&TDS Meter10* Storage Box Package List 5:10* PH Meter Package List 6:20* EC&TDS Meter20* Storage Box Package List 7:20* PH Meter Package List 8:30* EC&TDS Meter30* Storage Box Package List 9:30* PH Meter