existential insanity, eh?

hmm Oakton TDSTestr11...

I've had one that takes a very specific ppm solution, 1687ppm or something along those lines.

If you're off by a fraction, lets say you have ro water thats actually 20ppm, but it reads 25, then 40 will equal 50, and 80 will equal 100, 100 will equal 150, etc.. (probably not that linear hah)


Let me try to find the calibration solution for the Oakton TDSTestr11