I’ve never used the blog for this purpose, but why not?
The benchtop pH meter I purchased when starting the Pharmboy laboratory a number of years ago is beginning to have electronics problems (it’s an old Fisher AccuMet of some sort with a digital display that reads in Roman numerals).
Hence, I am looking for recommendations for a new pH meter.
You would think this query for recommendations on the lowly pH meter is pedestrian and insignificant. But, I can assure you, that many a biochemical experiment has gone awry because the pH of one’s solution is off due to inadequate attention to pH adjustment or calibration of the meter itself.
(I’ve even had an issue back when we used guanidine HCl for denaturing purification of insoluble recombinant proteins from E. coli; all of our enzyme assays stopped working suddenly…restriction digests, PCR reactions, etc. I noticed that someone had not been paying good attention to rinsing the pH electrode when making the guanidine solution and crystals of the protein denaturant could be found near the top of the electrode, probably feathering down gently into each and every solution made by each lab member).
Anyway, I kind of like the Hanna HI 4222 for its snazzy display and dual-channel pH and ion-specific electrode, but it’s probably twice the price of a comparable Fisher or Thermo.