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DougTheMapper
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This is very interesting. I think one of these days I'll have to check the accuracy of my "drug dealer" 100g scale against an analytical balance in
the lab at school and make a similar plot.
As for the cheap jewelery scale: buy the "Accurate Digital Jewellery Pocket Scale" next time 
Victor Grignard is a methylated spirit.
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crazedguy
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Peach I want your scale.
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peach
Bon Vivant
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If you post me YOUR scale, I could check it.
I doubt it's necessary though, they'll all be around that graph I expect. Most of the scales will be coming from one or two places in china making
five billion different models, all with the same sensor in them. The sensors will certainly be coming from a small number of people.
The guy who sold me that thing worked in a cyrogenics lab for the air gas people, and now he's off messing around with 'nuclear liquor' as he put it;
some stage of the processing at the local nuclear power plant (he was making some kind of racking system for the tanks to go on). I tried asking him
for some of that too but, I couldn't have it.
But all those zeros are mainly wank fodder. They're not all that necessary for most work. If you don't get a boner looking at B14 glass and smaller,
it's almost certainly too many zeros. B19 and 24, you'll be working with quantities that are a good percentage of that balance's limit. E.g. balances
like these typically only read up to about 100g, or 200 on the dual mode models. And a typical B24 flask will be 250 to 2000ml.
Yarz need to appreciate the wonder of error canceling and significant figures. Doing multiples of something fairly inaccurate, but with a periodic
error, can massively boost the overall accuracy.
Also, you can use dilution and other methods to get accuracies of that level. For example, if you want to very accurately measure out 0.1g of
something, you can dissolve 1g of it in 10ml of solvent in a volumetric flask to make a stock solution, and then use a pipette to pick up the 1ml of
solution. You can also check your stock solution with things like titration - using dilute solutions so the error of the burette makes less of a
difference in the end result.
Apples and oranges, they're both fruit.
Going back to drug dealing scales...
The pharmaceutical companies do the same. They don't measure out the drugs per tablet, they measure a big bag (bin or truck) full of them, dump it in
the mixer with the binders, spin it until it's very thoroughly mixed, press it into headache / flu / bum runs tablets, 5.) PROFIT! 6.) put in a
placebo enhancing packet 7.) MEGA PROFIT!<---- the placebo effect, even for things as basic as paracetamol in a shiny wallet pack, is devastatingly
powerful.***
And chemists do the same. The bench acid is a stock solution the technician has made from concentrated acid, then diluted down massively to give you
an accurate standard to work from that's easy to measure.
***Read 'Bad Science' by Ben Goldacre, you will LOVE it.
[Edited on 13-12-2010 by peach]
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crazedguy
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http://www.americanpyrosupply.com/SCALES_AC_POWER_ADAPTERS-M...
That would be my scale, I just like yours because of all the zeros it would make me feel like a real scientist. That many zeros did almost give me a
boner but after hearing it only goes to 100g kind of ruined it, I need a scale that measures more accurately my right now only does grams which is ok
for now. I can't imagine any real uses for a microgram scale other then maybe making LSD or just showing off.
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DougTheMapper
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I have the American Weigh AMW-100 100x0.01g http://www.americanweigh.com/product_info.php?cPath=60&p...
The company actually puts up a tolerance of + or - 0.02g but I'm starting to find this hard to believe for a scale I bought for $17 on Amazon.com.
Victor Grignard is a methylated spirit.
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Steve_hi
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centigram balance
I just received my centigram balance from homescience tools.
Looks nice and works great 200gm capacity 59$US.
comes with a 100gm weight batteries included.
Digital Scale, 200 g x 0.01 g
$79.95 $59.95
This digital scale provides 0.01g sensitivity! It is easier and faster to use than a mechanical bala
[img]//http://www.hometrainingtools.com/search.asp?ss=balance&x=26&y=23[/img]
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ScienceSquirrel
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Registered: 18-6-2008
Location: Brittany
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Mood: Dogs are pets but cats are little furry humans with four feet and self determination! 
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Some time ago I promised that I would post a picture or two showing my brewing activities.
This picture shows the main area; on the bench from left to right is the 60 litre boiler, the 45 litre mash tun that will hold up to 15 kg of grain
and a 23 litre barrel of beer.
Standing on the floor is a 40.5 litre barrel of beer that is waiting to go out for a party in early May.
There are more barrels under the bench and you can see the top of one of the 60 litre fermenters in the bottom left corner.
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#maverick#
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i wish you guys could see my mouth agape after looking at some of these labs, i will post my simple and kind of sad lab compared to you guys later
[Edited on 22-4-2011 by #maverick#]
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bwpatton1
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I second maverick. These are amazing labs! When I finally get my lab hastily put together I will try to post a few pics.
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Sedit
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Registered: 23-11-2008
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@DougTM.
I have to ask man, is that a torn apart MW under your workbench? I got two just like it
Knowledge is useless to useless people...
"I see a lot of patterns in our behavior as a nation that parallel a lot of other historical processes. The fall of Rome, the fall of Germany — the
fall of the ruling country, the people who think they can do whatever they want without anybody else's consent. I've seen this story
before."~Maynard James Keenan
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mashton
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Wow, thanks to all who've posted pics here....I'd call this Lab Porn!!!
I need a lie down!!
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benzylchloride1
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Mood: Pushing the envelope of synthetic chemistry in one's basement
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Here is a semi-complete tour of my lab, several new instruments are missing
 
My Perkin-Elmer 1310 dispersive infrared spectrophotometer and my Buchi RE, RE111 and vacuum box, quite recently added a recirculating chiller
though, not in picture.
Some of my older chromatography equipment, recently upgraded
I dont have pictures of my Hewlett Packard GC, and Waters HPLC
A picture of me working in my hood.
My Perkin-Elmer Lambda 3B UV-Vis spectrophotometer
[Another view of my chromatography area
Leitz SM-LUX phase contrast microscope and UV-Vis spectrophotometers, Parr hydrogenator lurking below!
Dry box for air sensitive work
Distillation apparatus and Schlenk line
Balance area and flammable storage cabinet
[Edited on 8-12-2011 by benzylchloride1]
[Edited on 8-12-2011 by benzylchloride1]
Amateur NMR spectroscopist
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benzylchloride1
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Mood: Pushing the envelope of synthetic chemistry in one's basement
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I ran out of space, here is my oldest gas chromatograph and the crown jewel, my Hitachi R 1200 60 MHz nuclear magnetic resonance spectrometer Way too much equipment, but so little time due to grad school
[Edited on 8-12-2011 by benzylchloride1]
 
[Edited on 8-12-2011 by benzylchloride1]
[Edited on 8-12-2011 by benzylchloride1]
Amateur NMR spectroscopist
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Magpie
lab constructor
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Location: USA
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Mood: Chemistry: the subtle science.
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Very nice! It looks like you are ready to go into business for yourself once you finish grad school.
Is that a butcher's table you have for your balance? Where is your lab located - in your parents' house? If so, you have very supportive parents.
The single most important condition for a successful synthesis is good mixing - Nicodem
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Arthur Dent
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@BenzylChloride1:
Amazing list of equipment! Far beyond what the typical hobby chemistry setup that most of us have. I have a nice collection of glassware but no
analytical tools, even in the used market, these pieces of gear are outrageously expensive for my modest means. The only electrical gear I have is an
antique fischer hotplate and a balance with an accuracy of .1g
I particularly love your dry box module and rotovap, both of which I deam of owning one day.
Robert
--- Art is making something out of nothing and selling it. - Frank Zappa ---
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benzylchloride1
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The balance table is a spare butchers block, it works pretty well. I am a big fan of the old Mettler single-pan balances, they can be obtained for a
song and run circles around the newer electronic scales. I weigh chemicals much faster on my old Mettler then I can on the newer electronic balances
in my research group. I will have to buy an electronic scale for my glove box though when I get it running, since a mechanical balance would be
extremely hard to use in a glove box. I have most of the parts for the dry train, I just have to get a solenoid valve, and a photohelic gauge to
control the nitrogen. I think a GC-MS will be the next major purchase after I get all of the other equipment running. Currently, my lab is located in
my parents unfinished basement. I think that I have put approximately $8000 to $12000 into my lab, since I got into grad school, I have been able to
spend about $300 per month on equipment, which goes a long ways. Ebay is not always the best source for equipment, It pays greatly to visit the
surplus stores of major universities. I have a ton of other equipment that is not shown in the pictures such as glassware, furnaces, drying ovens,
mantles, high vacuum equipment, an ion chromatograph, a complete Waters HPLC, large scale photochemical reactor, spinning band distillation equipment,
recirculating chillers and water baths, A FTIR, and loads of useful chemicals. A rotovap is a must have if you have any major synthetic projects
planned. The excessive amount of equipment is needed for some of the projects that I am working on such as the total synthesis of taxol, which I have
been working on for about a year and a half.
[Edited on 9-12-2011 by benzylchloride1]
Amateur NMR spectroscopist
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Maus
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Nice collection.
Looks like you also have a Perkin Elmer 467 grating IR under that bench you have the 1310 on.
http://www.sciencemadness.org/talk/files.php?pid=229476&...
How much of the stuff actually works and is set to go? I bet you have some issues to sort out on a few. Could you describe some of the things on
your to-do list?
[Edited on 23-12-2011 by Maus]
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benzylchloride1
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Posts: 299
Registered: 16-3-2007
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Mood: Pushing the envelope of synthetic chemistry in one's basement
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Most of the equipment is in working order, the 1310 IR and both UV-Vis spectrophotometers run. The 467 IR is unrepairable, since the specialty
thermocouple is unavailable, I tried for several years to find parts to get it to run, thats why I bought the 1310 IR which does not use a
thermocouple, but a pyroelectric detector. The Gow Mac 150 gas chromatograph works quite nicely. The NMR spectrometer still needs to be moved
somewhere where it will not be too cold to operate since it is in my garage. I still need to purchase several gas cylinders for one of my other gas
chromatographs and also I have not determined the best way to run the dry box. I also have several HPLCs that I am in the process of obtaining parts
to get them fully functional. The RE model rotovap is in good working condition and the RE 111 needs a teflon ring that goes inside of the condenser.
I have found it cheapest to just buy equipment, rather then to build my own stuff and less time consuming, which allows me to spend more time working
on chemistry. Often equipment is outrageously expensive on Ebay at first glance, but one has to look for the deals that appear from time to time.
Amateur NMR spectroscopist
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smaerd
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benzylchloride1 your lab is a jaw-dropper! Invite me over  .
This is why I love this forum. Reminds me I'm not the only student stacking equipment and glass in the basement .
With all that analytical equipment you should run samples for fellow amateurs and makes some $ on the side!
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Hexavalent
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Location: Wales, UK
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Quote: Originally posted by Magpie  | | I gave up on trying to store my strong HCL (36% muriatic) in my lab in the garage. It was corroding all my steel tools. So I placed it in my outside
shed where I keep my solvents. This is not the perfect solution either as the HCl vapors are attacking my lawn mower and steel shelving somewhat.
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Shouldn't you say 'I gave up on trying to store my concentrated HCl . . .'?
pKa and Ka doesn't change much even with the addition of water.
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mr.crow
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I haven't had any problem storing HCl. I keep it in a glass bottle with polycone cap, inside a bag, inside a cardboard box with a container of baking
soda.
Double, double toil and trouble; Fire burn, and caldron bubble
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smaerd
International Hazard
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This might sound ghetto but I do a wrap of duct tape around the lid, and haven't had any problems.
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Mildronate
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i also have some instrumental analysis aparatus:
polarograph,
flame photometer,
photometer,
potentiostat,
Culonometric integrator,
several pH meters, jonometers,
had one 12 chanel chart recorder and one x y recorder, i also had data logger, oscillocope, severall precision voltmeters, potentiometer. Last thing
what i got is 50L. Several years i think about chemistry business, bu i have no ideas to my mind its not so easy, of course you had analytical
equipment but its not sertificated, also in this moment i am undergraduate. I live in post soviet country i can get here equipment very easaly bunch
of old unworking factorys, and i get many old aparatus from several months ago university. Of course its not easy to repair all
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Raptureisbliss
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my lab 3 weeks in
  
Wood frame.
Inlets air foils of PVC pipe on upper and lower interior.
baffle with 1 7/8" holes, with plugs to adjust air flow if necessary.
Epoxy coated wood. Tile floor with lip.
42" x 48" x 24"
8" 650 CFM centrifugal fan
Face velocity = flow rate / opening area at 18" height x 48" width
Face velocity = 650 Ft^3 / 6 Ft^2
Face velocity = 108.33 Ft/(min-thanks for correction) "ideal"
with drag, inefficiencies... face velocity is in acceptable range for fume clearance.. 80-100 Ft/min
[Edited on 25-1-2012 by Raptureisbliss]
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Bot0nist
International Hazard
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Registered: 15-2-2011
Location: Right behind you.
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Mood: Streching my cotyledons.
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Very nice rapture! I'm jealous. Can't wait to see some of your work.
U.T.F.S.E. and learn the joys of autodidacticism!
Don't judge each day only by the harvest you reap, but also by the seeds you sow.
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