...
Bryan has tested our water software in our spreadsheet about 50 times now and it shows results within 1/100th of a pH point every time.
...
I think those statements have been refuted For example, on HBT where DeLange says:
"Well I hope you can understand why I am so skeptical. I use an electrode that costs more than 4 times what that meter did with a meter that cost 4 times what your meter did and process the results in a computer using algorithms that estimate the calibration parameters, including the iso electric pH based on hundreds of calibration readings and make the pH readings over a 20 - 30 minute period and find the pH changes over a few minutes by several time 0.01 pH. Plus, as mentioned above, bufffer tolerances of ±0.02, temperature measurement error, uncertainly in pHi and instrument noise, even with the lab grade meter I use make it extremely unlikely, in fact I'll say impossible, to measure pH consistently to 0.01 50 times in a row.
I have learned over the years that if it sounds too good to be true it isn't and this definitely sounds too good to be true. Nothing in the real world works EVERY time. Something is glaringly amiss here. Of course I am curious and would be happy to see if I can help you figure out what it is."
Sent from my iPad using Tapatalk