They form when the hydrogen bubbles don't get big enough for their bouyancy to overcome their adhesion to the electrode before silver gets trapped on the bubbles surface tension. The silver can get sturdy enough to encrust the bubble and stabilize it and another small bubble will start to form on top of that one, in turn, becoming encrusted. Meanwhile, the ion path becomes limited because, unless the silver particles are actually touching each other, they won't conduct anything. In effect, electrode surface area reduces and that throws all calibration out the window. An auto off circuit is tuned to electrode surface area and the amount of current being used. [among other factors]
Pulling too little current seems to contribute to small bubble formation quite a bit. You can just wipe the formation off till the conductivity of the water is sufficient, or seed the water with CS to raise that initial conductivity.
Another factor can be water pressure from stirrers. If the pressure wave from moving water is great enough it will compress the hydrogen bubbles on the side facing the water current and prevent them from growing. An encrustation will grow in the direction of the water current.
Using a bubbler might eliminate that element but not sure what all that extra air being dissolved into the water does.
Perhaps a stirrer can be run fast enough to blast the bubbles off when they're really small. {gotta try that}
The 777 is a current controlled generator. It doesn't matter. If the water is very pure and won't conduct sufficiently, the current draw will be very low no matter what. It can take hours and hours for it to come up to the set current at the maximum voltage the power supply will deliver. Unless the 777 uses a comparator chip I have yet to discover, anything over 36 volts will blow it out.
Seeding and moving the electrodes closer together [gradually moving them apart as the current starts flowing] are two ways to get around that. Conductivity is a function of distance in the water. Moving the elctrodes is one way of manually regulating current in non regulated generators.
Bending the electrode tips toward or away from each other to take advantage of 'edge discharge characteristics' modifies both the 'off' point and the voltage/current relationship somewhat by altering the 'apparent' electrode spacing.
Edges and tips produce a higher current density than faces and rounds. You maybe could bend them towards each other to start and gradually rotate the ends parallel towards the end..if they will rotate. [Not sure how they are mounted in the 777] If the electrodes are ribbon silver, this would face half the edges toward each other..not sure what would happen. [probably nothing major other than weird electrode wear and a calibration change]
Facing the tips away from each other increases run time and strength a little by fooling the 'off' circuit. That may also prevent premature tip and edge erosion, especially on a wire electrode which has only one edge [the tip]
ken
At 08:29 AM 6/19/02 -0700, you wrote:
>>>>
Hello Ken,<<<<
If I remember correctly, the discussion was about using steam-distilled water for making
cs and the poster stated that they used WalMart water and I asked if it was steam-distilled.
Then I stated that I used WalMart brand and just realized upon reading your post that I
actually use WalGreens's brand with measures 0.5-0.9 ppm with my Hanna PWT meter.
I continually get mixed up with the WalMart/Walgreen names, wish one of them would change.
It used to be easier to distinguish between Sears and Wards.
If cs is poured into the 'DW/cs to be', doesn't that prevent the fluffy deposits. Lately, I have
been having trouble getting my Colloid Master 777 to shut off after the proper cs level is
reached. I don't know if it is an equipment problem or if the problem is the nut behind the
wheel. Perhaps you are right and my water is too pure. Ideas? I haven't called the CM 777
people yet.
John
-----Original Message-----
From: Ode Coyote [mailto:coy...@alltel.net]
Sent: Wednesday, June 19, 2002 6:31 AM
To: silver-list@eskimo.com
Subject: RE: CS>Source for recipes?
If that's measured with Dist 1 PPM meter, it's OK
It's impure enough to get the reaction started fairly fast and not so impure as to cause contamination problems.
I actually prefer DW that reads 1 PPM over the more pure water.
Extremely pure water does not pull enough current to prevent fluffy deposits from growing [which slow the reaction even further and wastes silver] and can take several hours to draw significant current which will throw any attempts at timing a batch right out the window unless an ammeter is employed to set a base reading.
Ken
At 04:54 PM 6/18/02 -0700, you wrote:
>>>>
I use WalMart DW and find that it is about 0.5-0.9 ppm.<<<<
That is why I was wondering about the 'steam-distilled' bit.
John
-----Original Message-----
From: Jack Dayton [mailto:jack...@harbornet.com]
Sent: Tuesday, June 18, 2002 4:39 PM
To: silver-list@eskimo.com
Subject: Re: CS>Source for recipes?
Hi John, WalMart's DW has been discussed within the last few weeks,
but I'm not sure what was said, but I think the answer is no.
Jack
From: "John Reeder" <jree...@sbcglobal.net
BTW, is WalMart DW steam-distilled?
-- The silver-list is a moderated forum for discussion of colloidal silver.
Instructions for unsubscribing may be found at: http://silverlist.org
To post, address your message to: silver-list@eskimo.com
Silver-list archive: http://escribe.com/health/thesilverlist/index.html
List maintainer: Mike Devour
