TDS Meter, Pool Salt Meter, Upgraded-read to see why!

Description

TDS, electrical conductivity (EC) and Temperature meter.
PLEASE read the full description to understand TDS meters and important facts.
We are partnering with a supplier to sell various brands of overstocked meters. Not all meters are the same, even if they appear to be the same unit. What's inside is determined when the manufacturing runs are ordered. Even though a meter looks the same, it is not.
TDS measurement is dependent on water temperature. All meters claim to have automatic temperature compensation (ATC). The truth is they don't, even though the manufacturer says it does. ATC must be added at the factory. It costs more. Most TDS meter sellers don't know this and believe the manufacturers. The meters for sale here DO HAVE ATC. It can take a minute or two for the temperature to stabilize, especially if the liquid you are testing is different than room temperature.
The EC measurement is in microsiemens (uS). Many hydro nutrients use the mS (millisiemen) unit to determine strength. Search it for the conversion. It will make you a better grower.
Use TDS to test your reverse osmosis filter or distiller. You cannot determine water hardness with a TDS meter. This is a false sales pitch. Water hardness and other minerals contribute to TDS. A water softner trades hardness minerals for sodium. There is no net change in TDS because one thing is traded for another.
You can esitmate the salt level in a pool by converting the TDS level to a rough salt level. The meter comes with instructions. Salt meters are TDS meters that convert TDS to a ppm salt level. You can do this in your head with the instructions. There are no true "salt meters" for pools. They all measure TDS and convert it to ppm salt to estimate salt levels.
All TDS meters require periodic calibration. This meter can be calibrated and comes with instructions. It is easy.
We hope our description provides you with helpful science-based info on TDS meters. Your purchase goes to help community science and technology mentorships.