TDS meter 0 - 9990 ppm digital pH meter 0.01 pH high-precision pen-type water Monitoring TDS & pH meter 0 - 14 pH LCD PPM Monitoring aquarium filter

Product Description:
The TDS meter is an excellent tool for determining ppm (parts per million) in both household and professional settings. It is suitable for various professional and household applications, such as drinking water, hydroponics, aquariums, aquaculture, swimming pools and hot tubs, spas, car washing, food and beverages, coffee, kombucha, laboratories and sciences, colloidal silver,  testing, laboratories and sciences, and many more! Feature:
1. It's simple to use. Just insert the probe into the water being tested to understand the water quality, and it's convenient to use at home.
2. Locking function. Manually lock the measurement value for easy reading and recording.
3. Quick and accurate readings. The large LCD display makes it easy to read.
4. It's in the form of a handheld pen, making it convenient to put in your pocket or bag for immediate water quality testing.
5. Made of ABS plastic, it is durable and lightweight. Waterproof design, low-power processor.
What is TDS?
TDS stands for total dissolved solids, which are inorganic salts and organic substances in the liquid. This includes , magnesium, sodium, etc. Specification:
Material: ABS plastic
Color: Yellow
Dimensions (length x width): Approximately 13.8 x 2.3 cm
Measurement range: 0 - 9990 ppm
Measurement accuracy: ± 2%
Voltage: 3V 
Battery: 2 x LR44 (included) Note:
● Do not immerse the instrument in liquids with a depth exceeding the maximum immersion depth of 4 cm.
● Do not store the instrument in a place with high temperature or direct sunlight.
● When ordering the pH meter, a free 4.00 and 6.86 solution calibration buffer powder with high precision will be sent, including 9.18!!