Digital Salt Meter

Check my signature for what I use. Extech EC 400 with K-1766 as backup. The Extech has proven to be reliable within 100 ppm over 6 years of use.
 
How’s the $15.99 one?
Works fine. It sits idle six months out of the year, and if it craps out at the start of the season I buy another one. It is repeatable. So if the meter differs by 200 ppm compared to what the SWG is reporting and 300 ppm compared to the K-1766 it says that way. The readings do not drift around and I know what to expect with a quick test.