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kaberett(1) Learned to wash beakers
(2) Washed most (but not all) of my own personal beakers
(3) Been trained to use HF
...
One of these things is not like the others.
Also "learned to top up the acid stills", but that sounds like a bigger deal than it actually is so I'm leaving it off. ;)
(2) Washed most (but not all) of my own personal beakers
(3) Been trained to use HF
...
One of these things is not like the others.
Also "learned to top up the acid stills", but that sounds like a bigger deal than it actually is so I'm leaving it off. ;)
(no subject)
Date: 2013-10-30 07:50 pm (UTC)(no subject)
Date: 2013-10-30 07:55 pm (UTC)Also known as dissolving them. They're really reluctant to, y'see, so apparently we end up using a 3:1 mix of conc HF + conc HNO3...
(Washing beakers is a three-stage process involving acids. That's probably also of interest to at least some of them. ;)
(no subject)
Date: 2013-10-30 08:05 pm (UTC)DH wants to know (he's not with me...): do they just tell you "no, seriously, you should be scared of this stuff" or do they also show you hideous photos of people who weren't?
(no subject)
Date: 2013-10-30 08:17 pm (UTC)She also says she's not at all interested in showing people horrifying photographs, because scaring them just makes them more likely to have shaky hands thereby increasing the risk of an accident. So what she actually did was:
- have me read through the safety docs, then ask me questions on them
- explain about diluted HF being more dangerous than concentrated HF (you're less likely to notice the spill immediately on skin contact), and how to watch for & deal with spills
- talk me through how to double-glove (vinyl over nitrile; don't bother with double-nitrile; occasionally triple-glove, with two layers of vinyl over nitrile)
- demonstrate what droplets look like on vinyl gloves, given that I'm unfamiliar with using them (she used water to demonstrate, which has a higher surface tension, but is still useful because I always default to nitrile not vinyl for everyday use, and vinyl gloves are much shinier)
- talk me through fetching the HF from the other lab, including how it ought to have had (1) a pH indicator strip in the outer enclosure but didn't, and (2) how it ought to have had Parafilm around the cap but ditto
- ... and then show me the minutiae of how to handle it once open (short version: never leave a container with HF in open for any longer than you can help, ESPECIALLY not large volumes; check your gloves and the containers between every step for any drops of HF; always have a large beaker of water in the hood for dilution)
... all interspersed with conversation about how to handle spills if they happen, including but not limited to the important point of: if you are applying calcium gluconate to someone, put vinyl gloves on before touching the affected part of their body. Because rubbing in the HF antidote WITH BARE HANDS is NOT HELPING ANYONE.
She was very clear that it's not helpful to be scared of it. Treat it with healthy respect, sure, but active terror is something she thinks is... not helpful.
At this stage I am almost more scared of what she'll do if I break her 15-year streak than of the stuff itself ;)
(no subject)
Date: 2013-10-30 08:54 pm (UTC)(no subject)
Date: 2013-10-30 09:18 pm (UTC)(no subject)
Date: 2013-10-30 09:19 pm (UTC)(no subject)
Date: 2013-10-31 01:16 pm (UTC)(no subject)
Date: 2013-10-31 02:01 pm (UTC)(no subject)
Date: 2013-10-30 11:45 pm (UTC)