Never yet, but im sure it’ll happen eventually, if i forget to pierce plastic tubes when i drop them in liquid nitrogen they will explode, but id have to be pretty absent minded
none:-) oops – apart from the time I left a mercury thermometer in an oven and it exploded. I wasn’t popular. Our lab did nearly go up when there was a hole in the bunsen burner tubing and a colleague burnt herself badly. It was nearly bad, don’t want to think about it too much!
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