I don't know what part of the country your in but up here we have dollar stores that have these kind of batteries....what about rechargable batteries for uses like this or can't you recharge them when they are that small....debbie
-------------- Original message -------------- From: <gvagraph...@adelphia.net> > Listers, > > I bought two PWT's from Trem a couple of years ago and check one off against > the > other. > The battries are expensive $3.50 each and wach PWT takes 4 small micro units. > > I bought battries recently from Radio Shack (#23-105 -- 1.5v Watch & > Calculator) > -- I unpacked the first from its sealed sales card holder and measured less > Milli-Amps than the old ones -- in other words they were old and had no > "useby > date" so beware!! > > The battery manufacturers have a free ride -- they never have to really > guarantee their products will work for any period of time etc. Yes! Some do > have > use-by dates. > > Now there's a "Consumer Issue" for someone looking to become famous!! > > Douglas H > > ---- Ode Coyote wrote: > > > > The calibration solution I got from Hanna was 50% off spec. Plenty of > > denial, no refunds. > > I learned a lot by deduction and it took about a month to figure it all > > out. > > The calibration instructions were far from enlightening and didn't > > mention what temperature compensation was all about. > > Hanna Tech was like "You're too stupid to ask questions, so stop it" [If > > we tell you the real story, you'll see how misleading our ad copy > > is...defend the product at all costs. ] > > > > Fortunately I had 2 PWTs to make comparisons by and make deductions from. > > > > Ode > > > > At 10:53 AM 7/9/2006 -0600, you wrote: > > > > >Hi Mike, > > > I haven't worried about calibration since the first couple of months I > > > owned my PWT. It has remained consistent with itself, and the measurment > > > of uS of an immediately finished batch of CS in my Silverpuppy never > > > varies more than fraction. > > > A meter that isn't too far off, that gives consistent readings of both > > > my DW and the finished CS is more important than that it read an exactly > > > accurate uS. Hope that makes sense? I can tell immediately if anything is > > > different in the DW or the CS, and I think that consistency is what is > > > important. > > > > > > I believe Ode some years back had a similar experience to what you > > > described your friend had with two PWTs that gave very different > > > readings. > > >sol > > > > > >Mike Monett wrote: > > > > > >>I have a Hanna PWT but the COM100 is next on my > > >>shopping list. I really like the temperature display, and I understand > > >>from > > >>David that the probe is a bit smaller than the Hanna which will make it > > >>easier to get readings from a bit of cs in a shot glass prior to > > >>sublingual > > >>absorption. > > >> > > >>I should also mention that my Hanna arrived several years ago in perfect > > >>calibration, and has held the original calibration extremely well. I have > > >>verified it numerous times with precision measurements using the Faraday > > >>calculation, and it has always agreed within 1uS up to about 15uS. The > > >>readings tend to depart around there due to AgOH formation. So I am > > >>confident my unit is functioning well. > > >> > > >>My faith in Hanna plummeted recently when I recommended a friend get one. > > >>She got two, with the calibration solution. When she brought them over to > > >>compare calibration with mine, we discovered that one unit was so far out > > >>of calibration that the adjustment screw could not bring it into > > >>calibration. > > >> > > >>The second unit was fine, but it was out of calibration. We discovered > > >>her > > >>calibration solution read high, about 96uS. So I recommended she send > > >>them > > >>back and get a refund. > > >> > > >>It is very difficult to recommend what to do to verify the manufacturer's > > >>products in a case like this. If you can do the Faraday calculation, it > > >>can > > >>help up to about 15uS. The salt test is useful, but it takes practise to > > >>judge the readings, and they won't be closer than about 5uS. So it can > > >>only > > >>catch gross calibration errors. Diluting a saturated salt solution takes > > >>some skill, and the resulting solution may not be very stable. It can > > >>also > > >>become contaminated from the container the solution is stored in. > > >> > > > > > > > > >-- > > >The Silver List is a moderated forum for discussing Colloidal Silver. > > > > > >Instructions for unsubscribing are posted at: http://silverlist.org > > > > > >To post, address your message to: silver-list@eskimo.com > > > > > >Address Off-Topic messages to: silver-off-topic-l...@eskimo.com > > > > > >The Silver List and Off Topic List archives are currently down... > > > > > >List maintainer: Mike Devour > > > > > > > > > > > > > > > > > >-- > > >No virus found in this incoming message. > > >Checked by AVG Anti-Virus. > > >Version: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 7/7/2006 > > > > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Anti-Virus. > > Version: 7.1.394 / Virus Database: 268.9.10/383 - Release Date: 7/7/2006 > > > > >
