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InvisiblebodhisattaMDiscordReddit
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Re: Media bottle exploded, what did I do wrong?!?! [Re: NickPapagiorgio]
    #26961604 - 09/30/20 08:30 AM (3 years, 3 months ago)

When its hot and cooling it forms a vacuum. When its cool and reheated it will form pressure.


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OfflineNickPapagiorgio
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Re: Media bottle exploded, what did I do wrong?!?! [Re: bodhisatta]
    #26961663 - 09/30/20 09:25 AM (3 years, 3 months ago)

Thanks bod. I'll loosen the cap next time to vent when reheating pre-sterilized agar. I just assumed doing so could give the potential for contamination. I'll risk contams before I risk blowing up more glass!


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Re: Media bottle exploded, what did I do wrong?!?! [Re: John_1098] * 1
    #26961792 - 09/30/20 11:02 AM (3 years, 3 months ago)

Quote:

John_1098 said:

I had one explode recently. I had just microwaved it help to dissolve the powder and was pouring hot water from my sink into the pressure cooker when it happened. It was legit boro glass and I've done it the same way probably hundreds of times before but never will again. Lid was loose while microwaving and when it broke.





That bottle looks like had a very thin wall like a flask or beaker. What brand? The Pyrex (standard) bottles look to be about a 5 mm wall thickness. Schott (spendy) and Simax (cheaper) are also good bottles. Schott is made in Germany and Simax I think is Czech but I believe they use the Pyrex recipe. Schott is by far the most durable and consistent glass I have seen. It even has a solid break pattern where it makes strait clean breaks instead of cracks that run multiple jagged directions. I melt a lot of borosilicate glass and I can tell you it is not all created equal. Pyrex, Schott, and Simax are all very strict about their COE ratings and consistency in their batching as well as strict and controlled annealing cycles of their finished "branded" products like labware. Anything from china is garbage and possibly dangerous.

Media bottles with a 2-3mm wall thickness are more likely to break from any type of shock than a bottle with a 5mm wall thickness.


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