Thanks to everyone for your thoughts on the
question of keeping the CS process warm.

I tried the heating pad method today with
interesting results. . . 

I filled a large plastic tub with warm water
and placed it on a heating pad turned all the
way up. Inside the tub, the CS jar and
its .999 electrodes were submerged in the
warm water up to the neck
of the jar. The water in the tub 
stayed about 104F for the whole
process.  Observations:

- The sintering  started faster
than normal (room temp) by about half. 

- The stream of yellow particles went 
up and sideways, rather than
down, which is what happens
for me without warming.

- The time to complete a batch
was reduced by approx 30-40%

Normally, in a cool room, a batch
of 25ppm takes my rig 6 hours or more.
this batch took around 4 hours.

One strange anomaly:

The anode (which is normally
uniformly dark afterwards)
had pea or bb sized silver marks all 
over it. . . . little round areas that 
were -not- discolored. these
seem ingrained deep in the 
silver and won't rub off now.

Very strange!  Heat seems
to be altering the chemistry
of the CS process?!?

Next, I'll try the microwave. :  )




At 11:20 AM 9/15/99 -0500, BROOKS BRADLEY wrote:
>                        Dear Mr. King.
>                        I happened upon your post and offer the following
>for your consideration:
>While there are a number of procedures that would yield acceptable results,
>I offer one that has been successfully employed by one of our "tinkering"
>technicians.
>                Obtain two of the "extra-large" soft drink cups (closed-cell
>styrofoam) for use as the main enclosure. and retain the plastic cap that
>comes with such a drink.  He uses a conventional 1 qt. "mason-type" canning
>jar as your CS generation vessel.
>                Using scissors or xacto-type knife, shape  the plastic lid
>to a geometry that will fit around the sides of  your electrode-holding
>device/block.   Fill the  jar with DS water to the bottom of the jar neck
>and place in a micro-wave oven and select 3 minutes at "high" setting.  This
>should result in a temperature between 180 and 195 degrees.  Place the
>heated water, immediately, within the styrofoam containers (previously
>stacked, one within the other) and place the "customized" lid on top.
>                This system has been utilized by several of our lab
>personnel in their "home brewing" endeavors relating to CS generation----and
>successfully so for several years.
>                If increased insulation around the sides is desired,
>newspaper folded down to approximately 6" width and wrapped around the jar,
>works fine.  However, this is seldom done at present.......as the thermal
>preservation offered by the cups, alone, is quite adequate-----for 30
>minutes;  which is longer than the generation cycle for the 5 ppm that most
>are generating.  This arrangement is quite effective, even when using
>small-volume aquarium pumps for solution aggitation.  This offers a
>"low-tech" method for utilizing heated water in CS generation.
>                                Sincerely.  Brooks Bradley
>        p.s.  If you have objections to using "microwave" technology,
>substitute heating in a pyrex pan/container  and heat to desired
>temperature.  Allowing water to come to a beginning boil has not caused any
>compromising effects in the resulting CS solutions.
>
> Steve King wrote:
>
>> >>Heating the water during processing also stirs things up a bunch, but
>> it does introduce a whole host of variables that are difficult to
>> control and not well understood.
>>
>> Hi all
>>
>> I'm new to the list and I have already found it
>> very very valuable. So here's a quick question
>> about heat. . .
>>
>> I have found when using DC (777SE) that ambient
>> temperature seems to greatly affect production
>> rate. On a cold day, the process takes a lot longer.
>>
>> Any ideas about how to keep the process warm
>> without introducing more variables.  For instance,
>> I would hesitate to put the glass CS vessel on a
>> hot plate because the elements in the hot
>> plate will introduce fields into the solution.
>> What about a large container of water on
>> a heating pad with the CS jar elevated (on
>> glass) inside , like a double boiler?  e.g.:
>>
>>                                lid
>>                            CS jar
>>               non-conducting spacer
>>             large container of water
>>                       heating pad
>>
>> In general, how far from the heating pad
>> would the CS jar need to be to greatly
>> reduce the amount of electrical fields
>> that the solution is subjected to?
>>
>> thanx!
>>
>> Steve King
>>
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>
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