Features of TDS :

For this PH TESTER, it does not includes calibration liquid, the one you get maybe not accurate, In order to ensure the accuracy of this item pls make calibration when you get the parcel
1. 100% Brand new and high quality
2. This item can be used in: water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools and spas, aquariums, hydroponics
3. Hold function: Saves measurements for convenient reading and recording
4. Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries
5. Dual Range: Measures form 0-999ppm, with a resolution of 1ppm. From 1, 000 to 9, 990ppm, the resolution is 10ppm, indicated by drinking x 10image, Factory
calibrated
6. Rang: 0-9990ppm
7. Accuracy: +/-2%
8. Battery: 2 x 1.5V Button Cell battery (not included)
9. Item size:155mm x 31mm x 21mm
Note: Do not drop the entire TDS meter in water of dip beyond the maximum immersion level. This unit is not water-tight and is not covered under the warranty if water enters the unit.
Features of PH:
100% brand new and high quality

Display: LCD Digital

Accuracy: 0.01

Resolution: 0.01

Operating Temperature: 0~80°C

Measuring Range: 0.00~14.00

Probe Type: Precision glass bulb electrode

Calibration Method: 2 points automatic calibration

Power Supply: AG 13 Batteries(Not included!!!)

Size:155*29*16mm