PH PENs

I have to buy yet another PH pen. PH pens have been a pain in the ass for me. What PH pen do you use? Should I spend the extra money on a good pen? I need it to be water proof, since I have to dip my hand down into Aeroponic bins to test the water.

Yes, yes, yes. Buy a good meter. Buy it from a local shop if possible. Even if its more money. The only ph pen i would buy and rely on is blue lab. Get yourself both calibration solutions and the kti storage fluid. If you need a ppm pen as well they sell a kit that gives you errythang. Blue lab has a 1 yr warranty, if any shop is decent, should a problem with it arise, they will give you a new one on the spot. It needs to be taken care of though. Cleaned, calibrated and the probe kept wet!

Blue Lab!