Had my ph pens and ec pens for 8 years with no probs...
Always clean probes...
Always store probes in water...
Always have spare batteries...and probe tips!
Always calibrate with a ph buffer solution...
Always put the lid on the probe IMMEDIATELY after use...
Always have a backup/redundancy scenario planned!
muA
Milwauke(like the territory, spelling maybe off) it's a yellow colored pen. I have had mine for 4 years and it still works. I calibrate once a month and has been working like a gem.Could some of you folks chime in and give me some of your opinions regarding these fickle instruments? I seem to go through about 3 per year and I had a battle with 2 the other day that drove me mental. Which pen is bombproof and where is it??? Thanks, Chaco.