Hi Neville, The keeping wet instruction is to prevent premature death of the pH probe. they go for years if looked after properly . Some probes may go down, never to recover, in a month or so if not cared for.
OK, Tony On 5 Jul 2010 at 10:57, Neville Munn wrote about : Subject : RE: CS>Testing pH? > > Hi Tony, > > Most articles I've read talk about keeping that probe wet all the time. I > don't think that's important for my purpose though. I'd say that's only > if a degree of accuracy was of the utmost importance, more in laboratory > situations I suspect as opposed to the kitchen benchtop. > > I think I've got the answer I've been looking for. > > > > Cheers > > > N. > > > > > From: a...@new.co.za > > To: silver-list@eskimo.com > > Date: Sat, 3 Jul 2010 09:24:33 +0200 > > Subject: RE: CS>Testing pH? > > > > Hi Neville, > > > > Taking a guess here . The buffer may be a solution made up to be a fixed > > pH for testing and monitoring and adjusting the pH meter. From memory, > > watching others setting up and calibrating pH electrodes and meters, > > there were two such solutions at or near the ends of the upper and lower > > range of the desired measurement range. But usually only one solution is > > sufficient for checking, once the meter and electrode is set. > > > > A buffer solution is chosen to be a stable pH even though it has aged or > > been stuffed up in other ways. It should be a steady, reliable known pH. > > > > OK, > > Tony > > > > On 3 Jul 2010 at 11:28, Neville Munn wrote about : > > Subject : RE: CS>Testing pH? > > > > > > > > This is why I asked if a buffer is *necessary*, I don't want to change > > > anything, and I don't want to 'neutralise' anything, I just want to > > > take a measurement *as is*. > > > > > > > > > > > > I'm content now, knowing that a buffer is not a requirement if simply > > > wanting to take a straight measurement of water or a solution. > > > > > > > > > > > > Why do you add the reagent Harold? > > > > > > > > > > > > Correct me if I'm wrong, but buffers are for the purpose of increasing > > > or decreasing acidity/alkalinity as a compensatory measure to create a > > > neutral pH are they not? I don't wish to alter or neutralise anything, > > > just get a reading of pH of the water/solution as it is from scratch. > > > > > > > > > > > > N. > > > > > > > > > > > > From: har...@telus.net > > > To: silver-list@eskimo.com > > > Subject: CS>Testing pH? > > > Date: Fri, 2 Jul 2010 16:26:24 -0700 > > > > > > > > > > > > > > > I test my Distilled water using an aquarium kit.It uses a blue > > > reagent,2 drops in a measured amt of water. > > > > > > Harold > > > _________________________________________________________________ If > > > It Exists, You'll Find it on SEEK. Australia's #1 job site > > > http://clk.atdmt.com/NMN/go/157639755/direct/01/ > > > > > > > > -- > > The Silver List is a moderated forum for discussing Colloidal Silver. > > Rules and Instructions: http://www.silverlist.org > > > > Unsubscribe: > > <mailto:silver-list-requ...@eskimo.com?subject=unsubscribe> > > Archives: > > http://www.mail-archive.com/silver-list@eskimo.com/maillist.html > > > > Off-Topic discussions: <mailto:silver-off-topic-l...@eskimo.com> > > List Owner: Mike Devour <mailto:mdev...@eskimo.com> > > > > > > > _________________________________________________________________ > View photos of singles in your area! Looking for a hot date? > http://clk.atdmt.com/NMN/go/150855801/direct/01/
