[NEVER USED] Hydrometer and pH meter, numeric salt meters and PH. 5 salt readings in pH, Temp, and TDS.

Product never used, packaging damaged during transport. Unopened product, repackaged in our warehouses, in perfect working condition, warranty available." Watch out, dove! 1. Do not calibrate the devices in the air. 2. Calibrate the devices before use to adjust them. 3. After the tests, the electrodes are washed with lukewarm water and dried. "