<bart416> azonenberg, some idiot was trying to use aqua regia to etch a PCB :|
<bart416> Luckily somebody came up with the *cough* brilliant *cough* idea to dump some sodium hydroxide in it to neutralise it...
<bart416> Needless to say we were rather pissed that said person did so
<bart416> Cause with that it somehow managed to destroy the etching bath...
<bart416> Meaning you had this ceramic table with either aqua regia on it or sodium hydroxide
<bart416> We weren't quite sure
<bart416> Made for a funny situation in terms of clean up
<soul-d> lol and i thought i was a chemical hazard
<bart416> soul-d, try first year engineering students who haven't had basic chemistry yet
<soul-d> i havent had basic chemistry  except books  and a shed :)
<bart416> Yeah, but you don't have access to a full lab with restricted chemicals ;)
<bart416> Most of the really dangerous stuff is gone by now
<bart416> But still enough of it to go around
<soul-d> no but half lab and most dangerous stuff
<soul-d> and i can pretty much order all
<bart416> Dunno, could you just grab 3-4 things of the shelve to make an explosive?
<soul-d> this is a garden site
<bart416> Cause that's the case...
<soul-d> yes
<soul-d> i have kmno4
<soul-d> good for flash
<soul-d> if i wanted to :P
<soul-d> and kno3 for  and nh4no3
<bart416> We could make a few littres of nitroglycerine in matter of minutes >_<
<bart416> Your turn
<bart416> And this is an electronics lab...
<soul-d> if i wanted to i probably could do so to  but i don't
<bart416> I think the only thing we're missing is cyanide compounds
<soul-d> yah ill leave that  to you  same with  most other fun stuff :)
<soul-d> sure for home chemist it's hard  and  probably not in large quatities  but most is doable if you want
<bart416> Do you have a block of arsenic?
<soul-d> people with bad intentions probably  don't have a problem at all getting stuff needed
<bart416> Somebody ordered that back in the day with the excuse "we need dopant materials to display"
<bart416> Actually it was used as rat poison
<bart416> Safe material handling *cough*
<soul-d> no but i don't have most dangerous stuff  although maybe some
<bart416> Keep in mind they cleaned up their lab
<bart416> They thought it was a good idea to remove all the crystalised products that were borderline explosive
<bart416> So their cleanup was done and we only had etching supplies left
<soul-d> sulfuric acid  is most dangerous i have i think :P maybe others that are not are toxic like borax
<bart416> And one of the lab assistants went to raid the material sciences lab...
<bart416> So essentially nothing changed
<bart416> Except that we don't have bleach anylonger
<bart416> "You can't have bleach!"
<bart416> "But we have a bottle of 1l of 1M HCl"
<bart416> "You can't have bleach in the lab"
<bart416> Wtf??? o_O
<soul-d> lol
<bart416> ^Logic
<soul-d> how much is that in%  do  have 5 of 30%  gcl for no apearent reason :P
<bart416> what do you mean?
<soul-d> i meant to ask what you ment with 1L of 1M  HCl
<bart416> 1M HCl, so 1 mol of HCl molecules / l of solution
<bart416> I'll put it this way, it's at the bottom of the pH scale
<bart416> That's how safe it is to handle :D
<soul-d> oh yeah need to restart chemistry though only did it for like 2 weeks then deemed it to dangerous to do @ home  well   but ofcourse stocked up on lots of chems and supply's :P
<bart416> And this is still an electronics lab...
<bart416> We're not quite sure what they've got stocked in the actual chemistry labs
<soul-d> well  i was terrified first time handeling  h2so4  adding it to water
<bart416> Probably highly enriched uranium or something
<bart416> two near critical masses probably
<bart416> sitting about 2m away from each other
<bart416> That sounds about right
<bart416> You should be terrified
<bart416> H2SO4 is nasty
<soul-d> yeah  but if it translates to shaking  it doesn't help :D
<bart416> also, idiots do it the other way around
<bart416> Fun to watch actually
<soul-d> i like to watch from distances :)
<soul-d> espeicaly with chemistry
<bart416> it's especially fun if they're not using pyrex glassware
<bart416> makes for an interesting display of why you should do it the other way around
<soul-d> and still precautions with all glassware should be taken anyhow but i probably shoulnd  say that atm :P  since my shed looks like a student apartment with chemicals :')
<bart416> Actually pyrex is pretty hard to break as long as you don't knock it over
<soul-d> problem is if you need to learn yourself is  it's hard to start since it is hard to get  all chems needed in a timely fashion   egg from when you read a experiment in a book  and then also learning all the saftey precautions regulations storage etc
<bart416> excellent chemical resistance
<bart416> And as long as you don't pour molten metals into it it should last rather long
<soul-d> yeah i knocked on over  though , wasn't a true pyrex though  although all is sodiumborsilisomthing glass
<bart416> Borosilicate glass is pyrex...
<bart416> but pyrex is shorter xD
<soul-d> :) thought it was brand name
<bart416> In north america it is
<bart416> In Europe and Asia Pyrex does refer to borosilicate glass
<soul-d> should clean mine lol  just noticed i have them all dirty
<soul-d> ah thought it was french
<bart416> now quartz...
<bart416> That's a different story all together
<bart416> quartz glass is pretty much perfect
<soul-d> weird stuff building alogic analyzer but now needitng to wonder wich output to trust  the counter in breadboard or the logic analyzer's readout  but first time i saw  most of the count cycle complete :)
<bart416> Hard to tell
<soul-d> yeah proably cause my target ground cable is a bit flimsy so maybe noise :P  made one then figured out i don't have enough proper wires to wire it :)
<soul-d> was where i left of yesterday
<soul-d> but also just playing with signaltap for a day so don't know in's and outs yet
<bart416> always have the ground be the shortest connection!
<bart416> it's a common thing on all propper oscilloscopes and logic analyzers
<bart416> the ground lead is shorter than the measurement probe
<soul-d> yah made a mistake in board anyhow put "target gnd"  on fpga side instead of measuring side
<soul-d> but ill rember that
<soul-d> currently target  is  7 bit counter output  on hc595  and 1 bit  is used as clock (one of clock signals of external device)
<soul-d> probably should create internal slow clock :)
<soul-d> but thought it would be easyer to the timing that way
<soul-d> current setup -> http://i.imgur.com/DNKsN.jpg  did order some supplies