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Offlinemushpunx
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Vented lids on plates?
    #27313050 - 05/17/21 09:40 PM (3 years, 7 months ago)

Hey guys-

Am I correct that "Vented lids" means they have a little gap between the edge of the lid and plate?
These are little plastic risers yeah?



I have noticed on some blank plates I had wrapped and stored a tiny bit of bacteria around the very edge of the plate.
I inspected and found on some plates some very tiny vertical tears on the gap between the underside of the lid and plate . Here is the spot I mean:



  So it's possible contams can enter through the rip in the Parafilm and thru the vent.

Anyone else have this problem? I've had this roll for a while but it's not dried out or anything. I might try setting them on a piece of paper because maybe the Parafilm is sticking to my glass desktop and getting tears when I pick them up, or put a piece between them if I stack them.
I could switch back to cling wrap but I can get free Parafilm sometimes.

Never gave much thought to if my plates had vents or not before, anyone use non vented plates? Is that a thing? 😂

Thanks

  -MP


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Edited by mushpunx (05/18/21 05:30 AM)

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Invisiblestubb
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Re: Vented lids on plates? [Re: mushpunx]
    #27313063 - 05/17/21 10:10 PM (3 years, 7 months ago)

Yeah, that's a four vent dish. 

https://www.shroomery.org/forums/showflat.php/Number/7664006
(The copypasta in the OP regarding particles rarely going up and over the dish comes from Tritech Research.)

Quote:

RogerRabbit said:
I had to donate 3/4 case of non-vented dishes to a local high school because they just wouldn't work properly.  Growth would stall after a few days, and bacteria is encouraged.
RR




I've never used them personally, but as I understand non-vented and single-vented dishes are typically used for growing anaerobic shit.

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Offlineverum subsequentis
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Re: Vented lids on plates? [Re: stubb]
    #27313101 - 05/17/21 11:18 PM (3 years, 7 months ago)

This is precisely why I use glad instead of para. I hate those little tears. Also, glad is cheaper and I find it easier to use.

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Offlinemushpunx
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Re: Vented lids on plates? [Re: stubb]
    #27313257 - 05/18/21 04:56 AM (3 years, 7 months ago)

Ahh makes sense. To be honest I've always noticed my plates said "vented lids" and I figured this is what it meant but I never really gave it any more thought, thanks !


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Offlinemushpunx
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Re: Vented lids on plates? [Re: verum subsequentis]
    #27313273 - 05/18/21 05:22 AM (3 years, 7 months ago)

Quote:

verum subsequentis said:
This is precisely why I use glad instead of para. I hate those little tears. Also, glad is cheaper and I find it easier to use.




I'm glad to hear it's not just me!

This happened to me like last September and I chalked it up to a stale roll or something and switched back to cling wrap.
But my sister works in a laboratory and brought me up some free Parafilm and media bottles and stuff so I started using it again.
I use 3 or 4 squares and wrap around the dish at least a couple times, and it's not like I'm yanking it super tight or anything.

Guess I'll go back to cling wrap. No time for this hassle :shrug:.

Thanks!


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