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Offlinethe man
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any reason wh not to use "to go" containers for agar pastyplates etc?
    #27052786 - 11/22/20 06:46 PM (3 years, 2 months ago)

i see folks useing tupperware but why not use https://www.amazon.com/Glotoch-Microwaveable-Containers-Dishwasher-Free-Perfect/dp/B01EFFBNMO/ref=asc_df_B01LH5VH62/?tag=bingshoppinga-20&linkCode=df0&hvadid=&hvpos=&hvnetw=o&hvrand=&hvpone=&hvptwo=&hvqmt=e&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=&hvtargid=pla-4583795260416403&th=1

there is some 150ml and smaller var aswell good size even.60-80mm wide maybe

instead of tuperware for buck a pop get 50 for 6 bucks for pastyplates

those clear pp5 to go containers.. often the lids may not be pp5 but ALOT are. plus crazy cheap.. any reason why not to use these for agar? or substitute for jars?  obv need venting similar to tupperware mini jars..

I suspect maybe pints may e tricky to not crush?    they have some cool soup containers with side vents..

any input appreciated. thanks!


Edited by the man (11/22/20 06:54 PM)


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Offlinesonoramo
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: the man]
    #27052824 - 11/22/20 07:16 PM (3 years, 2 months ago)

The main reason to spend a little more is that you can get plates that are far handier and more durable. If you're worried about cost, consider the incremental cost of making way more agar than you need. There's just no real advantage to the larger diameter tubs. The food-service tub floors are not flat, so you'll wind up using way more agar to fill the edges. And there's no benefit to having so much extra area inside. It's just more opportunity for contamination. Also, larger plates and tubs are harder to maneuver in your SAB or HEPA enclosure.  I have yet to find snap-on tops (PP5 or other) that don't melt or sag in the PC.

I've been using 75 x 11mm Plastic Petri Dish plates from amazon. These cost about $1.25/ea and I've re-used them many times. They stack very well, they are easy to open and close in a SAB or a flow enclosure. The tops fit well and this helps keep contamination out, especially if you wrap with cling wrap or Parafilm. Note that you just wrap the edge (use a 3-5cm width of saran wrap if you don't have Parafilm). The 70mm diameter is very convenient for germination, transfer/isolation and for storage. This diameter reduces the circumference to the point that one short piece of saran wrap goes around it and seals them very well. Consider how many more culture samples you can store if the container is smaller! The only real failing is that they aren't as clear as I'd like.


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Offlinethe man
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: sonoramo]
    #27052886 - 11/22/20 08:03 PM (3 years, 2 months ago)

the ones i found are standard size.  ie 80-100mm wide that slightly thicker pp5 plastic lid deli like container used for soups.. always thought saging was more from vaccum and not venting properly (ie no filter disc of polyfill) or pulling vent of PC.  very well could be why folks dont use but juts wanted to see if anyone has tried with proper vents and with confirme pp5 lids as alot dont have dishwasher safe lids just bottom.


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Invisiblealaskappalachian
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: the man]
    #27052940 - 11/22/20 08:40 PM (3 years, 2 months ago)

They work ok but x2 on the agar usage and depth mentioned.  My main issue with this kind is lid warpage after a few uses but you never know until you get em home and try with each batch.  Not that you asked, but I really like the ziploc twist n lock 4oz. containers.  Unmodified and I have put them through over a hundred cycles with no apparent issue.  Not a single warped container or bad lid.  Super cheap too.


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Offlinethe man
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: alaskappalachian]
    #27052986 - 11/22/20 09:11 PM (3 years, 2 months ago)

here is more of what they had.. 3 or so inches at the bottom 80 ish mm

https://www.amazon.com/dp/B07F7J6QCN/ref=emc_b_5_t


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Invisiblealaskappalachian
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: the man]
    #27053007 - 11/22/20 09:22 PM (3 years, 2 months ago)

Hell for that price you might as well give em a whirl.  They still appear to have a deeper portion on the bottom around the edge but really no big deal.  Nice thing about these as prepours is that the sides aren't super high which makes transfering easier than with jars or ziplock containers.


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OfflineMyco Extremist
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: the man]
    #27053015 - 11/22/20 09:29 PM (3 years, 2 months ago)

The lids are not pp5 and will melt in the PC.

https://www.webstaurantstore.com/choice-8-oz-microwavable-contact-clear-round-deli-container-and-lid-combo-pack-case/127RD8COMBO.html

These ones will work but I still prefer the glad cups. The lids on these are a massive pain to open in a SAB. I used maybe about 10 of the 35 I made and went back to the glad ones.


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Offlinethe man
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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: Myco Extremist]
    #27053018 - 11/22/20 09:33 PM (3 years, 2 months ago)

ya these are just examples the ones i found are pp5 lids as stated. its something i saw at a wholesale place for stores and resturaunts shop.

good to know. thanks!


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Re: any reason wh not to use "to go" containers for agar pastyplates etc? [Re: the man]
    #27053027 - 11/22/20 09:35 PM (3 years, 2 months ago)

Quote:

the man said:
here is more of what they had.. 3 or so inches at the bottom 80 ish mm

https://www.amazon.com/dp/B07F7J6QCN/ref=emc_b_5_t




I tried some that look just like that. They were advertised as being for slime. The tubs are PP5 but all the tops melted in the PC. For a while I used the bottoms with standard mason jar lids (no rings) to replace the melted tops. Turns out that was a good fit, though I relied on saran wrap to hold the lids on. But the "made for autoclave" petri dishes are a lot easier to manage.


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