Now free to any BCAquaria member with 50+ posts.

Please bear in mind that it is currently reading 1.7 off higher (I confirmed with calibration fluids) so it will need a new probe. Hence, this is priced very cheaply.
The probe will cost about $50.00

I will also include both necessary fluids for future calibration.

I'm giving this away because I live in a condo and I'm trying to reduce clutter!

Gas Measuring instrument Plastic Electric blue Machine