James, on the COM-100 can it be used to test for "purity" of distilled water as well as "strength" (ppm or other) of "CS" solution?
Your answer greatly appreciated, GS ________________________________ From: James McDonald <kscma...@yahoo.com> To: "silver-list@eskimo.com" <silver-list@eskimo.com> Sent: Tuesday, June 4, 2013 5:02 PM Subject: Re: CS>Checking distilled water quality I use a COM-100 EC/TDS/TEMP tester by HM Digital and would recommend this tester. It works very well and has three different non-linear EC-to-TDS conversion factors (KCl, 442TM, NaCl) as well as temp. ________________________________ From: Jason <ja...@eytonsearth.org> To: silver-list@eskimo.com Sent: Tuesday, June 4, 2013 2:11 PM Subject: Re: CS>Checking distilled water quality Hi Andreas: What is the conductance tester you are using? I only have experience with a PWT (which is designed to test pure water). It really shouldn't be off the chart. Any PWT or TDS meter should be able to read close to 1000 PPM. FYI: Rinsing with distilled water won't remove any actual residue in the glass container. To ensure total cleanliness: 1. Use a bit of 3% H2O2 in teh glass container, and wipe down thoroughly with a clean white paper towel. Leave a tiny amount of H2O2 in place for a few minutes before drying. 2. Rinse with distilled water 3. Dry with a clean white paper towel. 4. If you're a stickler for details, rinse once more with a tiny amount of distilled water (to remove any tiny fibers from the paper towel). I never use any type of soap product in any container I plan on brewing CS in. There are alot of contaminants that may not affect conductivity. However, distilled water is regulated, and while I don't agree with the current standards, contamination shouldn't be a great issue. ~Jason On 6/4/2013 10:58 AM, Andreas Hahn wrote: > Hi Jason, > Thanks for the fast reply. Since the bottle of store bought stuff says > "not for drinking," are there any unhealthy contaminants that would > still pass the conductivity test? > > The brewed CS is too conductive for my conductance tester, using an > ohmmeter produces a resistance of around 40k ohms. I did wash out the > glass in question thoroughly and then rinsed it with distilled water > before brewing, so there's little chance of anything substantial having > stayed behind on the glass. > > > On Tue, 4 Jun 2013, Jason wrote: > >> Hi Andreas: >> >> A PWT reading of 0.5 uS is great... perfect for making CS. >> >> You can also check the pH (although I'm usually dissapointed with >> store bought water pH) if you're worried about the quality. >> >> The distilled water that I make at home is 0.3 uS, pH ~7.0. >> >> I think that most of the commercial steam distillers must leave their >> production vessels open to air, as it usually tests acidic. However, >> CO2 doesn't seem to really affect the production process, unless high >> voltage is used (which pulls nitrogen from the air into the water, >> also making the end product acidic). >> >> Most home brew production setups result in some oxidized silver >> residue settling on the bottom of the container. >> >> Test the conductivity of your final brew to be certain that your >> container didn't have some residue, and then use a laser light to look >> for particulate silver (and see how many, if any, large particles of >> silver are in the brew). >> >> It's not a perfect science, but with practice you'll be able to tell a >> fantastic batch of CS in comparison to a mediocre (or bad) batch. >> >> Kind Regards, >> >> Jason >> >> >> On 6/4/2013 10:23 AM, Andreas Hahn wrote: >>> Hi, >>> I would like to use store-bought distilled water for making CS. Testing >>> with a conductance meter reveals very low conductance (0.5 >>> microsiemens). Is there any other thing to check? >>> >>> I made about 200ml CS in a glass with it and it produced a brownish >>> particulate residue that settled to the bottom. I'm not experienced with >>> making CS, so I don't know whether this is normal or indicative of bad >>> water. >>> >>> >>> >>> -- >>> 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> >>> >>> >>> >> >> > >
