Dan Nave wrote: > Did you add the H2O2 to the batches at the same relative time after the > CS had been made? In other words, did one batch cure longer than the > other before you added the H2O2? Someone has indicated that the > reaction of the CS to H2O2 is different depending on how fresh the CS is > or how long the CS has cured.
That is the one thing I was thinking could have made the difference. The first one was added 12 or more hours after the batch was made, the second one only a couple of hours. I am planning on doing some tests this week once I get my scanning spectrophotometer hooked back up to a computer. > > > On the new brew, perhaps try taking smaller batch quantities and adding > H202 to these smaller quantities at different times relative to when the > CS was made. EG, using the same brew: > > Batch 1 has H2O2 added immediately after it has been made. > > Batch 2 has H2O2 added 3 hours after it has been made. > > Batch 3 has H2O2 added 6 hours after it has been made. > > Batch 4 has H2O2 added 9 hours after it has been made. > > Batch 4 has H2O2 added 12 hours after it has been made. > > Batch 5 has H2O2 added 24 hours after it has been made. > > and so on... I agree, and plan on trying something like this in the next few days. If I can get them in the spectrophotometer I can likely easily determine what is going on. Marshall > > > Dan > > > ------------------------------------------------------------------------ > > > > Subject: CS>EIS and H2O2 > > From: Marshall Dudley <mdud...@king-cart.com> > > Date: Thu, 29 Dec 2005 19:44:02 -0500 > > To: silver-list@eskimo.com > > > > To: silver-list@eskimo.com > > > > > > OK, I am totally buffaloed now. I have made two 5 gallon batches and > > added H2O2 to them. Everything is as close to identical between them as I > > can get, but the reactions were totally different. > > > > Batches were produced as follows: > > > > Initial pH of water = 6.8 > > electrode area = 48 square inches each .999 silver plates > > current = 38 mA > > voltage ran typically 15-16 volts during making it > > continuous stirring, and polarity reversal at one minute per half cycle. > > Silver content estimate from conductivity measurements 20 ppm > > both were crystal clear, and measured 16.5 uS. > > both batches made at about 62 degrees F. > > tyndall was faint > > did not measure pH before adding H2O2 > > > > Added .5 teaspoon H2O2 per gallon, IE 2.5 teaspoons of 3% to 5 gallons to > > give 17 ppm > > First batch tyndall stayed faint, maybe even became fainter - > > conductivity measured 16 uS essentially unchanged > > Second batch tyndall became strong, EIS has a slightly cloudy look, but > > no color, conductivity 9.5 uS approximately halved. > > Both batches measure a pH of about 7.6 after adding H2O2. Adding H2O2 to > > distilled water gives a pH of 6.8 unchanged from plain DW. > > > > Taking samples of the second batch I did the following: > > > > Heated it, cloudiness and tyndall stayed the same, indicating that it was > > no silver chloride or silver oxide precipitant since the solution limit > > goes up when you heat it. > > Diluted it by 50%, tyndall approximately halved, indicating once again > > that the cloudiness is NOT a silver compound with limited solubility > > Added another 50 or so ppm of H2O2, no change. Added 500 or more ppm of > > H2O2 and it cleared up. I have no idea what that means. > > Added ammonia (ammonium hydroxide), tyndall did not change, proving that > > the cloudyness is from colloidal particles not from any molecular > > compounds of silver precipitated. > > Checked for color, none noted, meaning that the particle size is either > > very small, so the absorption is in the uv range, or very big so the > > absorption is in the infrared range. Strong tyndall implies large > > particles though. Will let sit for 24 hours and see if anything > > precipitates out, if we have large particles I expect to see it clear > > upon sitting. > > > > I am making another batch now. Before adding the H2O2 to the entire > > batch, I plan on adding it to a few ounce a drop at a time and try to > > figure out some more if the 3rd batch clouds up. > > > > Marshall > > > > > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.1.371 / Virus Database: 267.14.9/216 - Release Date: 12/29/2005 > > -- > 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 <mdev...@eskimo.com> >
