[Darkroom] Hello and looking for liquid bromine

Jasmine Strong jasmine at electronpusher.org
Tue Jul 19 19:30:27 UTC 2011

Mercury's not as dangerous as people think (at least not elemental mercury-  they used to stuff it into people's teeth, after all), but it takes only a few micrograms to fog a film-  Kodak prohibits people who work in their film manufacturing environment from having mercury fillings or using mercury thermometers.


On 18 Jul 2011, at 18:39, Kelly wrote:

> Yeah, handoffs are fine, but don't leave that there, Christian. It's
> fine for a few weeks if you're doing a project, but it's not a good
> idea to keep dangerous shit that shouldn't be used by just anyone in a
> communal darkroom that can be used by just anyone.
> -Kelly
> On Mon, Jul 18, 2011 at 10:49, Ben Rupert <meowdip at gmail.com> wrote:
>> Christian, I only left a few mL of bromine in the darkroom.  You are welcome
>> to take it if you want.  I'm not too concerned with leaving bromine or
>> mercury there myself, but if other people are then I think we should store
>> them somewhere else and bring them to the space only when they are being
>> used.
>> Ben
>> On Fri, Jul 15, 2011 at 3:35 PM, Christian Rice <clrice at gmail.com> wrote:
>>> Hi, Ben.
>>> Kelly is concerned that toxic chemicals not be stored long-term at
>>> Noisebridge.  I wasn't sure if it was your intention for me to take that
>>> bromine home, or to leave it at Noisebridge, or what.  I've not actually
>>> been able to get by there to see how much you left in the darkroom.
>>> I just wanted to check with you before I did something against your
>>> original intent...
>>> --christian
>>> On Thu, Jul 14, 2011 at 6:35 PM, Ben Rupert <meowdip at gmail.com> wrote:
>>>> Hey everyone, sorry I disappeared recently.  Been a rough couple weeks.
>>>>  Hopefully I can get back to this soon, I haven't forgotten about it.  I
>>>> see that there are some chemicals on the wiki, it's a good start and we
>>>> should be able to order everything people have asked for.  We can add
>>>> more as well or go with what's there.
>>>>  Also Christian, I believe that you offered to do a Daguerreotype demo
>>>> sometime this fall.  I would be quite interested.
>>>> Ben
>>>> On 07/06/2011 01:27 PM, Kelly wrote:
>>>>> 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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