【High Precision】With the titanium alloy probe and the latest sensors, you can get nearly exact measurements every time. In addition, the meter can be easily recalibrated if necessary for increased accuracy. 【Easy to Use】Just immerse yourself in the meter, stir and get your results in seconds. No calibration or setup required, you can use it right away. 【Save Money】Instead of getting involved with expensive lab tests or professional equipment, you can get reliable results at home. 【Simple and Instant】Professional pH meter, TDS meter, EC meter and temperature meter 4 in 1. You can know the water quality in seconds. With calibration function to ensure measurement accuracy. 【Suitable for】Check the TDS or EC of your aquarium, swimming pool or water source. You can determine the efficiency of your RO, DI or distillation system, check the nutrient levels of your hydroponic system and much more.