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MikeCrotch posted:I saw someone in a lab open up a can of powdered SDS and for some reason, take a great big sniff before he used it. He screamed quite a bit while his mucuous membranes dissolved, but they grew back. Eventually. I'm glad I never got to see poo poo like this happen in my chem labs
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# ¿ Feb 12, 2016 06:10 |
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# ¿ May 10, 2024 05:10 |
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cock hero flux posted:In chem lab me and my partner were heating something to get it to react and using a fluid thermometer to check the temperature and make sure we had it right. It seems like it's not heating up at all so we turn the burner all the way up to make it go faster. After about 30 minutes with it on full blast we realize two things. The first is that there is in fact no fluid in the thermometer, the bulb at the bottom is snapped off and the line we thought was the fluid is in fact just a line drawn on the thermometer. The second is that the mixture that was supposed to turn clear has instead turned black and the entire lab now smells like a tire fire. In this vein, I have seen many a rotovap dramatically bump because they forgot to add boiling chips. It's quite amazing to watch both the student and the lab assistant's face when this happens.
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# ¿ Feb 12, 2016 10:29 |
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Silver Falcon posted:I've never owned an electric kettle. Why is it a bad idea to heat milk in one? Isn't this like, rule number three? Just behind "Don't drink the chemicals" and "Wear shoes, numbnuts." Luckily, toluene is fairly benign outside of the possible cold burns from it evaporating off the skin. There's far worse in the typical chem fume hood. Some of it not splashed all over the walls. I recall there was some rather massive, yellow, bromine stains in a particular fume hood after someone left a reflux far, far too hot and it erupted like a geyser.
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# ¿ Feb 14, 2016 23:26 |