Where to buy a tds meter locally

[jawwad2004]

Hey guys I'm looking for a tds meter to test my Rodi water. I've been having diatom blooms as of late and can't figure out what could be potentially causing it. I'm in queens, was wondering if anyone knows of a shop that sells these things. Thanks!

 

[tangmaniac]

I have an extra one if you want $20 and it's yours

 

[jawwad2004]

Pm'd!