Author Topic: Cleaning Glass vessles?  (Read 751 times)

Offline Pi

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Cleaning Glass vessles?
« on: August 17, 2011, 06:54:30 AM »
I have noticed my Erlingmeyer flasks are starting to get kind of hazy. Is there something i can use on the to get them to sparkel again?
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Offline blatz

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Re: Cleaning Glass vessles?
« Reply #1 on: August 17, 2011, 07:05:48 AM »
long soak in warm PBW followed by a Starsan soak should do it.
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Offline mabrungard

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Re: Cleaning Glass vessles?
« Reply #2 on: August 17, 2011, 07:59:12 AM »
If your local water is hard, the haze may be calcium carbonate buildup.  In that case, adding an acid to the vessel may clear up the deposits.  I suggest distilled vinegar or 88% lactic acid as options.  StarSan is also a good acid.  You should be able to add a small amount and swirl instead of having to fill the vessel.  

If that doesn't do it, then the glass may be getting etched by something like a strong cleanser.
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Offline nateo

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Re: Cleaning Glass vessles?
« Reply #3 on: August 22, 2011, 04:58:20 PM »
Not hijack the thread, but I have an old "medicine" jug I was going to repurpose for starters and such. I have no idea what was stored in it, but it appears clean. I was planning on using pbw, but is there anything else I should do before using it?
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Offline tschmidlin

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Re: Cleaning Glass vessles?
« Reply #4 on: August 23, 2011, 09:47:32 PM »
Without knowing what was in it, I wouldn't use it.  Or at least I'd want to be reasonably sure it never contained radioactive material and I'd probably autoclave it.
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Offline punatic

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Re: Cleaning Glass vessles?
« Reply #5 on: August 23, 2011, 10:22:17 PM »
Without knowing what was in it, I wouldn't use it.  Or at least I'd want to be reasonably sure it never contained radioactive material and I'd probably autoclave it.

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