My LEDs are red (how'd that happen?)
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Please be positive and constructive with your questions and comments.
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My LEDs are red (how'd that happen?)
I got red LEDs. It's not a problem, I guess I'm just surprised. Anyone else get red ones, or was this just some fluke?
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- Posts: 23
- Joined: Tue Nov 01, 2005 4:45 pm
- k-rite
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- Joined: Mon May 09, 2005 11:43 pm
I'm pretty sure there is. I wouldn't inhale it. I even ventilate the room I'm in when soldering. You should definitely wash your hands after messing with solder that contains lead. I know that lead is really bad for children, so kids shouldn't even be around the area where soldering is occuring. It's always good to be on the safe side.kokoon wrote:i don't think there's any lead in the fumes.
- k-rite
- Posts: 65
- Joined: Mon May 09, 2005 11:43 pm
i saw a program on the discovery channel of actors during the medevil times. they used this white lead based paint on their faces. the actors would get really painful sores and would eventually die from lead posioning.Anonymous wrote:after long days of soldering ive gotten severe migranes
and others ive known have had their gums bleed
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- Joined: Tue Jun 21, 2005 9:02 am
normally lead cannot evaporate at soldering temperatures,
lead melts at 327°C but boils at 1749° and its vapor pressure at melting point is 4.21E-07Pa. that's even about 1000 times lower than mercury, and compare it to that of water at 0°C 610.6Pa.
Also, the OSHA permissible exposure limit (PEL) for lead is 50 ug/m3, as an 8-hour time weighted average, you will NEVER reach this by melting a few grams of solder with your iron on 370°C, you'd need like baths of lead at 1000°C...
the fumes arise from burning the organic flux and this is very unhealthy as it will contain possibly cancerogenous polycyclic hydrocarbons and 'half-burnt' sideproducts...
so just work in a well ventilated area, try not inhaling the fumes and if you can afford it and spend like days soldering, get one of those exhaust thingies
lead melts at 327°C but boils at 1749° and its vapor pressure at melting point is 4.21E-07Pa. that's even about 1000 times lower than mercury, and compare it to that of water at 0°C 610.6Pa.
Also, the OSHA permissible exposure limit (PEL) for lead is 50 ug/m3, as an 8-hour time weighted average, you will NEVER reach this by melting a few grams of solder with your iron on 370°C, you'd need like baths of lead at 1000°C...
the fumes arise from burning the organic flux and this is very unhealthy as it will contain possibly cancerogenous polycyclic hydrocarbons and 'half-burnt' sideproducts...
so just work in a well ventilated area, try not inhaling the fumes and if you can afford it and spend like days soldering, get one of those exhaust thingies
Please be positive and constructive with your questions and comments.