[Fully Meet the Needs of Hydroponic Growers] pH Meter: Monitoring the pH level of the hydroponic nutrient solution to ensure it can be maximum accessed by the plants. TDS & EC Meter: Keep tracking of the amount of nutrients in your solution to prevent it from being too high or too low and hindering the healthy growth of plants.

[Helpful for Aquarist] pH Meter: Keep the balance of pH value of fish tank, drastic fluctuations in pH value can seriously damage the survival environment of fish. TDS & EC Meter: Monitor the amount of ionic salts in the tank to remind fish keepers when to change the water to balance the ratio of various substances.

[Friendly for Pool Owners] pH Meter: Keep the pool water at the right pH level, which is friendly to swimmers' skin and eyes. TDS & EC Meter: Keep the TDS value of the pool water appropriate can extend the life of the pool equipment.

[2nd Generation pH TDS Meter Combo] Tired of using 1st generation yellow ones with small vertical reading display? The screen of YINMIK 2nd pH TDS meter combo is designed for horizontal display, when you check the pH TDS or EC value, you can always get temperature reading simultaneously, which makes your job easier and more comfortable

[What You Get] YK-P01B pH Meter *1, YK-E01B TDS Meter *1, YINMIK pH Calibration Buffer Powder* 6, LR44 Battery *6, YK-P01B pH Meter User Manual*1, YK-E01B TDS Meter User Manual*1. 90-days free return and 12-hours respond for any question.