Author Topic: Requesting help.  (Read 28639 times)

Offline Art

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Re: Requesting help.
« Reply #75 on: March 21, 2018, 04:44:26 AM »
I've only seen smoke like that coming off of a silver bar anode when not using a stirrer and running at high current. It formed a small pile of gray to black particles directly under the anode. It looks like the current may be higher than what your meter is showing.

Art

Offline alex79

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Re: Requesting help.
« Reply #76 on: March 21, 2018, 05:19:01 AM »
Alex,

A few things to check...

dean,
electrolyte is good ,also the karo syrop.i use them this week for 320pppm and 20ppm and were fine.the beaker is super clean and i rinse it before a couple of times with DW.i saw your advice about making 40ppm with 40 degres celsius.thanks for advice.

1. Have you recently cleaned your beaker with peroxide?
I had a 40ppm batch go completely opaque within about 10 minutes once.
I had just cleaned my beaker with hydrogen peroxide so thoroughly, thoroughly cleaned it again and it went perfect the second time round.

2. Are you using fresh electrolyte / accurately mixed?
Sometimes just going back to basics is enough to alter the chemistry.

3. Are anode and cathode fire cleaned before the run starts?
Just to rule out any contamination “pre-run”
4. Is your Karo fresh ( can attract mould if diluted and not used up fairly quickly.)

Just a few checks to eliminate the most common causes of what I’ve found to affect clarity.

Lastly, you’re still taking the temperature higher than I would go. I start the cell at 30c and let it rise to 40c by the end.

Have a go at that and see what happens.

Hope this helps.

hi dean
reducing agent and electrolyte are fine,use them this week for 20 and 320ppm.beaker super clean ,rinse it before also a couple of times with DW.flame also the bullion.turbidity problem i have only on 40ppm process with 60 degres temp.what is killing me is how others can do it at higher temp without turbidity.lol
“The more I learn, the more I realize how much I don't know.”

Offline alex79

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Re: Requesting help.
« Reply #77 on: March 21, 2018, 05:31:40 AM »
i have a multimeter conected all the time for double checking the current.i will make another experiment because the only thing that comes in my head is solubility
« Last Edit: March 21, 2018, 05:37:00 AM by alex79 »
“The more I learn, the more I realize how much I don't know.”

Offline kephra

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Re: Requesting help.
« Reply #78 on: March 21, 2018, 01:33:12 PM »
Do you also have a voltmeter connected?  Voltage can change during a run, and is very important.
Colloidal Silver is only a bargain if you make it yourself.

Offline alex79

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Re: Requesting help.
« Reply #79 on: March 21, 2018, 03:41:11 PM »
Do you also have a voltmeter connected?  Voltage can change during a run, and is very important.

I check sometimes the voltage (i have 2 multimeters, one that is good quality and is connected all the time for the current double check and one cheap with it I check the voltage but ramdomly
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Offline alex79

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Re: Requesting help.
« Reply #80 on: March 21, 2018, 06:25:52 PM »
DEAN,

IT WORK AT 40 DEGREES CELSIUS.NO TURBIDITY.STILL WONDERING HOW OTHERS SUCCEED AT HIGHER TEMP.
https://www.youtube.com/watch?v=SujxWyIyVyk

THANKS  ;)
“The more I learn, the more I realize how much I don't know.”

Offline Dean

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Re: Requesting help.
« Reply #81 on: March 21, 2018, 09:59:35 PM »
DEAN,

IT WORK AT 40 DEGREES CELSIUS.NO TURBIDITY.STILL WONDERING HOW OTHERS SUCCEED AT HIGHER TEMP.
https://www.youtube.com/watch?v=SujxWyIyVyk

THANKS  ;)
Awesome result Alex! So happy for you! Don't be so worried about how others do it. At the end of the day it's the result that matters and I'll tell you right now, that's an awesome result! It's the guidelines you get from the forum. That's what empowers you. You're own skill and judgement then comes into play.

I couldn't get washing soda to mix clear no matter what I tried, even though others use it exclusively. Results for all to see on my gallery. It looked like milk every time. In the end I gave up and now just exclusively convert regular bicarbonate of soda which has never failed to work so that's now "my way" of doing it. Well done!! Awesome job!

Offline alex79

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Re: Requesting help.
« Reply #82 on: March 22, 2018, 05:18:19 AM »
thank you for encourage me,many thanks to all that reply to my questions.
“The more I learn, the more I realize how much I don't know.”

Offline Neofizz

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Re: Requesting help.
« Reply #83 on: March 22, 2018, 06:55:50 PM »
That batch in the video looks perfect Alex, with no discernible turbidity. You are right and temperature has something to do with it. Speed of reduction is temperature dependent. And reducing too fast can cause turbidity. Only run your temperature as high as you need to for solubility purposes. When I do 20 ppm I don't use heat at all now.

Different reducers go at different speeds as well. Glucose is fast. Maltodextrin is slower. And Maltose is even slower. I use Maltodextrin unless I'm making a 320 ppm batch.
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."

Offline peri1224

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Re: Requesting help.
« Reply #84 on: April 27, 2018, 01:55:16 AM »
I had a supply of 320 ppm gelatin coated Colloidal Silver most of the time, except recently ran out. Then had to make a batch in a hurry. It didn't look as dark as usual but thought nothing of it. The taste seems to be slightly burnt. Then realized this morning that I forgot to put the glucose. I added only gelatin and the electrolyte. Stupid me.
The color looks fairly ok, but I wonder now what I have. Is it of any use?

Offline kephra

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Re: Requesting help.
« Reply #85 on: April 27, 2018, 02:32:41 AM »
You have mostly ionic silver.  Add the reducing agent, and heat it up for a while, you might be able to save it.
Colloidal Silver is only a bargain if you make it yourself.

Offline cfnisbet

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Re: Requesting help.
« Reply #86 on: April 27, 2018, 09:21:01 AM »
That batch in the video looks perfect Alex, with no discernible turbidity. You are right and temperature has something to do with it. Speed of reduction is temperature dependent. And reducing too fast can cause turbidity. Only run your temperature as high as you need to for solubility purposes. When I do 20 ppm I don't use heat at all now.

Different reducers go at different speeds as well. Glucose is fast. Maltodextrin is slower. And Maltose is even slower. I use Maltodextrin unless I'm making a 320 ppm batch.
For a long time, I have been suspicious of the speed of reaction (reduction) being the cause of turbidity. The only times I have ever seen a turbid result has been glucose reduction, particularly if there was not enough electrolyte. Slow reduction seems to be a very good idea, unless everything else is perfect.

I agree with not using heat if I am stirring the product mechanically, but I feel that it is essential to stir the bulk fluid somehow.

Offline Neofizz

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Re: Requesting help.
« Reply #87 on: April 29, 2018, 02:47:45 AM »
As Kephra has before stated, it's all a balancing act. We go in the opposite direction when making the 320 ppm colloidal silver, and it still comes out free of turbidity when diluted down to 20 ppm. I have made enough 20 ppm batches with heat and no turbidity as well, and using glucose. But my batches that showed the least Tyndall line were the 20 ppm's run at room temperature with constant stirring, and using maltodextrin to reduce. YMMV

This does sort of get into hair splitting territory so keep that in mind as well.
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Offline wkp80

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Re: Requesting help.
« Reply #88 on: January 17, 2019, 07:10:11 PM »
Hi all can anyone point me in the right direction where i can find the diagram for making a constant current regulator that is on this site. I have made one of these before and used it for several years with success. I now want to make one for my friend. Also i can't get onto the store site it is saying forbidden. I have also purchased a silvertron  last year and want another one for a family member.Any help will be appreciated.

Offline cfnisbet

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Re: Requesting help.
« Reply #89 on: January 17, 2019, 07:40:49 PM »
Hi all can anyone point me in the right direction where i can find the diagram for making a constant current regulator that is on this site. I have made one of these before and used it for several years with success. I now want to make one for my friend. Also i can't get onto the store site it is saying forbidden. I have also purchased a silvertron  last year and want another one for a family member.Any help will be appreciated.
We don't post circuit diagrams any more. I suggest you PM Kephra if you can't get into the SilverTron store. Otherwise, it would have to be a Bench PSU from eBay or Amazon.