I see u realized tds and ec were different ways of measuring same thing and deleted the post i was replying to!Some of the cheap ones do, many don't. I have one of each. Calibratable is good.
to be fair, at their own respective point in time, everybody on this site, myself included, was equally as ignorant about growing & didn't know jack shit, so......jus sayin 
ppp
U would need to be on facebook or reddit to see the level of idiocracy in some of these questions! Literally something google could tell u accurately in 2 seconds!mmmm....
same place had an ounce of Live Resin on sale for 90 bones, or clams or whatever the parlance of our time is 
