ZeroWater ZM-016 Electronic Water Tester
The TDS Meter helps you put a number on what your taste buds are already telling you about what's in your water. It measures for totally dissolved solids in water that can give it a taste. The highter the reading on the water the more substances dissolved in your water.  The meter is showing you the total number of detectable dissolved solids in water. With the push of a button, the electrodes in the bottom of the tester measure the amount of ions in the water and convert that amount to a number that displays on the screen. The number represents the detectable dissolved solids in parts per million that exist in your water sample  The meter is primarily used to indicate ZeroWater filter replacement at 006. It may also be used as a simple method to compare water quality by displaying the Total of the Dissolved Solids (TDS) in parts per million only. The meter does not specify what substances comprise the Total. The meter should not be used to assess the safety or purity of water, which should only be undertaken by a qualified laboratory. The meter is produced by a in independent laboratory supply company, not Zero Technologies, LLC. Operates on two 1.5v button cell batteries that are included. Batteries are readily available and easily changed when needed. The ZeroWater® TDS Meter is designed to fit into the reservoir of the ZeroWater® pitcher for storage.