I have spent about 3 grand on pens just in the past several years. I have bought $400 dollar pens and replacement probes. I have bought cheap $50 pens.
Every brand you can think of hanna, milwaukee , oakton,ect... Even no name brands .
I go through pens like every 60 days. I have bought solutions to soak them in after every use, cleaning solutions, activators and bla bla bla ... Done it all.
Then i bought the Apera Instruments PC60 Premium 5-in-1.
This thing came with a very nice case better case then the $400+ hanna i bought.
I cannot break this thing, I have had it for a year now I even bought another one just in case because im used to pens just being junk after so long and don't even need it. ( they even sell replacement probes that are easy snap on snap off the bottom 20 seconds and done, No spending hours hunting the company that makes the replacement probe and spending more on the probe then the damn pen itself.
I measure my solutions, Rinse the probe in RO water use my shirt to dry the probes and prongs put the plastic cover back on the bottom no solution just empty and dry.( as per directions)
I have calibrated it and it has barely lost its calibration each time.
Its fast has lots of modes and they are programmable, It gives you your reading within seconds even has a little happy face to tell you it has been x amount of seconds locked into that reading.
For me this Pen is the Bee's Knees.
P.S it has programmable modes for which ever EC,ppm System you use 500 /700 ect...
