Oakton pH Tester ( w/ ATC- well worth the $10 US)
Truncheon EC meter ( Mine's the old New Zealand Hydro manufacture- which should tell you how reliable these meters are. )

Both these meters are coming on ancient- but function like brand new.

Both are on their original electrodes.

The Oaktons pH meters will last a lot longer if you fold up a piece of filter paper ( I use a bit of a coffee filter) into a little square that you can tuck into the very tip of the cap and dampen w/ 7.0 buffer ( or storage solution, if ya just gotta have one more bottle on the shelf). Keeps the junction nice and moist. They used to come w/ this pre-installed- don't know why they stopped.

At some point you'll be tempted to calibrate in the cap- I gotta shamefully admit that I do, but w/o problems. ( I can hear Stinky groaning and muttering about " laboratory best procedure"...) Just rinse it out really well.

Let the Oakton TDS dry out once in a while- no wet-nap for the tds.

Truncheon has required no care but batteries, and the occasional wipe of the tip w/ some Scotchbrite. ( Ya gotta pop off the little oval tip sheild- DO NOT LOSE THIS!!! The design of the meter pretty much gaurantees that if you run w/o the tip gaurd, you will promptly manage to ground the electrodes and burn the board.)( NO STEEL WOOL! EVER!)

:stoned:Love the flashy lights.:stoned:

Most useable meter I've ever used- and I've used just about everything.


I've said it before and I'll say it again- :wtf:HANNA METERS ARE GOD-AWFUL CRAP.:wtf: Ya put it down in a non-reverent manner and it's done.

'Sa good idea to color-test the pH once in a while as a matter of course- It's tough to diagnose temp compensation circuit probs, as they won't show in calibration.