[Darkroom] Hello and looking for liquid bromine

Kelly hurtstotouchfire at gmail.com
Wed Jul 6 13:27:36 PDT 2011


Your wishlist goes here:
https://www.noisebridge.net/wiki/Darkroom/Chemical_Purchasing

Everyone who wants to order chems should add some so that Ben can
assemble a reasonable first shopping list. We need to also have
"educational" uses for them.

-Kelly

On Wed, Jul 6, 2011 at 11:49, Ben Rupert <meowdip at gmail.com> wrote:
> I did make it to Noisebridge and the bromine is on the shelf with other
> chemicals above the developing table/sink.  I'm on my phone now so don't
> want to type a lot but will respond to the other questions and comments
> tonight.
>
> Ben
>
> On Jul 6, 2011 11:45 AM, "Christian Rice" <clrice at gmail.com> wrote:
>> Ben, a few questions for you:
>>
>> - Is there anything you need from me to facilitate the opening of an
>> account, any initial order requirement? If so, I will supply $$ for some
>> sturdy containment vessels and more bromine.
>>
>> - did you happen to make it by Noisebridge on Tuesday?
>>
>> - chemical ordering: when I look at liquid bromine, the published qty
>> measurement tends to vacillate between mg and ml. There tends to be 99.5%
>> ACS (mg), 99.8% (mg) and 99.998% (metals basis, ml). The pricing and
>> packaging of the lower two (looking at Alfa's website) vary oddly, and it
>> seems the middle ground is the best price point (item #00905, 250mg or
>> 1kg),
>> by far. Can you shed any light on what's going on?
>>
>> - what kind of cap would you recommend on a glass bottle of this
>> stuff--PTFE, teflon-lined, or something else?
>>
>> Sorry to pester, my particular needs may not fall entirely in line with
>> the
>> normal darkroom activities. But then again, it would be my pleasure to do
>> a
>> Daguerreotype demonstration at Noisebridge in the fall, if there was
>> interest. It might go well coupled with other chemistry demos, as so much
>> of the process deals with basic elements (copper, silver, gold, iodine,
>> bromine, mercury). In fact, it would be really awesome to have a chemist's
>> commentary to augment my largely practical understanding of the process.
>> Could make a neat educational video...
>>
>> By the way, I do have a fairly large amount of Hg--maybe more than I'll
>> use
>> in my lifetime. The longer I've had my feelers out for such chemicals, the
>> more people come out of the woodwork with their old carburetor sync kits
>> they want to get rid of. One guy gave me a couple pounds in a single
>> jar...
>>
>> On Fri, Jul 1, 2011 at 5:19 PM, Ben Rupert <meowdip at gmail.com> wrote:
>>
>>> Hit reply rather than reply all, see below:
>>>
>>> On 07/01/2011 05:09 PM, Ben Rupert wrote:
>>> > I'll be over to noisebridge during the day on Tuesday. I'll bring the
>>> > bromine then and leave it in the darkroom and well labelled. I'm not
>>> > sure if we would have to have some sort of paperwork that we don't have
>>> > to buy the mercury when we do want more, but I think everything else
>>> > would be fine.
>>> > As for web pages to look through for chemicals, try these:
>>> > http://www.sigmaaldrich.com/united-states.html
>>> > http://www.fishersci.com/ecomm/servlet/home?storeId=10652
>>> > http://www.alfa-chemcat.com/en/gh100w.pgm
>>> > http://www.acros.com/
>>> >
>>> > I'm not going to try to set up accounts at all of these places, but
>>> > let's get together some lists of things we want and then figure out one
>>> > or two to order from.
>>> >
>>> > Ben
>>> >
>>> > PS. we will probably need some paperwork proving we are an educational
>>> > non-profit. This exists, correct?
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>>>
>
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