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Invisiblebootster
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Registered: 02/22/11
Posts: 1,531
Re: Disappearing agar... evaporation? [Re: Psilicon]
    #21304957 - 02/20/15 04:33 PM (9 years, 10 months ago)

Quote:

van der griegen said:
All I'm seeing there is the wiki for gel, which is a class of substances, but not for gelatin, which is a specific compound in that class, separate and distinct from agar.




Read closer. "Gel" is just a shortened form of the word "Gelatin".

"Origin of GEL

gelatin
First Known Use: 1899"

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OfflinePsilicon
Really Nice Guy


Registered: 08/26/12
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Re: Disappearing agar... evaporation? [Re: bootster]
    #21304966 - 02/20/15 04:36 PM (9 years, 10 months ago)

The link you sent me said it's a clipped form of the word gelatine.  It was clipped so that it could denote something different from the original.  They're not the same, dude.


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Agar - what, why and how?  Everything a beginner needs to know.
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Invisiblebootster
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Re: Disappearing agar... evaporation? [Re: Psilicon]
    #21305013 - 02/20/15 04:51 PM (9 years, 10 months ago)

Dude, there are subtle differences but I still think that the question at hand was "Do they evaporate, liquid to gaseous, or sublimate, solid to gaseous?".

Riddle me that Batman :confused:

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OfflinePsilicon
Really Nice Guy


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Re: Disappearing agar... evaporation? [Re: bootster]
    #21305023 - 02/20/15 04:55 PM (9 years, 10 months ago)

Fair enough.  And they evaporate; liquid diffuses and transpires through the matrix until exposed to the surface, where it will transition to a gaseous phase if the vapor pressure of water is low enough.


--------------------
Agar - what, why and how?  Everything a beginner needs to know.
Oat Prep Tek
Bored?  Please take one of my experiments off my hands.

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Invisiblebootster
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Re: Disappearing agar... evaporation? [Re: Psilicon]
    #21305057 - 02/20/15 05:07 PM (9 years, 10 months ago)

Makes sense to me. Did anyone ever tell you that you are a "Really Nice Guy"?

Just yanking your chain my friend. Thanks for the answer. I got "A's" in Thermodynamics in college, but that was in 1984 when I graduated. I know that the physics of thermodynamics hasn't changed.

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OfflinetaGyo
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Re: Disappearing agar... evaporation? [Re: bootster]
    #21305072 - 02/20/15 05:10 PM (9 years, 10 months ago)

You got an A in thermodynamics and you don't understand solids to liquid to gas?

:lmafo:

Sorry, sorry.


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Gyo's Better Grows
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Edited by taGyo (02/20/15 05:12 PM)

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OfflinetaGyo
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Re: Disappearing agar... evaporation? [Re: PsyCLown89]
    #21305077 - 02/20/15 05:11 PM (9 years, 10 months ago)

Quote:

PsyCLown89 said:
You are worrying me now, I made some plates 5 days ago and just used some micropore tape on either side of the plate to keep the lid in place.

I have them stored upside down as well (so the agar is on the "top") as apparently that is how you are meant to store petri's - reason being if there is any moisture, it can't pool and drop onto the agar :shrug:

Mine look fine still though, don't seem to be drying out like yours.



Don't store plates upside down.


--------------------
Gyo's Better Grows
TNF Q&A :rockon:
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Invisiblebootster
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Re: Disappearing agar... evaporation? [Re: taGyo]
    #21305105 - 02/20/15 05:20 PM (9 years, 10 months ago)

Quote:

taGyo said:
You got an A in thermodynamics and you don't understand solids to liquid to gas?

:lmafo:

Sorry, sorry.




I understand all that and never said anything indicating that I didn't. It was sublimation vs evaporation (If you read my original question.I just was curious to the declared state of "Gel" vs "Gelatine". I guess they never brought that up in class. But hey, If putting people down and demeaning others is your thing than carry on, just not with me.

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Offlinespacechildo
proletarians rise up
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Re: Disappearing agar... evaporation? [Re: bootster]
    #21305134 - 02/20/15 05:31 PM (9 years, 10 months ago)

:thataintright:

I'm pretty sure you just jacked a thread and didn't like the answer bootster.
If bragging about grades received in the early 80s makes you feel any better go ahead
but dont try to put down decent members who do nothing but good here :super:

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Invisiblebootster
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Re: Disappearing agar... evaporation? [Re: spacechildo]
    #21305248 - 02/20/15 06:06 PM (9 years, 10 months ago)

Quote:

spacechildo said:
:thataintright:

I'm pretty sure you just jacked a thread and didn't like the answer bootster.
If bragging about grades received in the early 80s makes you feel any better go ahead
but dont try to put down decent members who do nothing but good here :super:




My question was spot on the thread so I don't quite know where someone "Jacked the thread". The guy lied about my knowledge of a certain area of physics and then had the nerve to answer my innocent question with a demeaning answer.
I think more civility on his part would have been a better way of handling the question if he's such an asset to the forum. That's it in a nutshell.

You just demeaned me as well. I really didn't understand (and still don't know0 where you are coming from because you just inferred that he's so intelligent that I should listen to everything that he says is biblical. I am an Aethiest.

I have absolutely no animosity towards you guys but I don't need to be treated like this guy knows everything and I'm just a dumb shit. It doesn't go over very well. That's how it went down.

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OfflinetaGyo
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Re: Disappearing agar... evaporation? [Re: bootster]
    #21305274 - 02/20/15 06:12 PM (9 years, 10 months ago)

Quote:

bootster said:
Quote:

taGyo said:
You got an A in thermodynamics and you don't understand solids to liquid to gas?

:lmafo:

Sorry, sorry.




I understand all that and never said anything indicating that I didn't. It was sublimation vs evaporation (If you read my original question.I just was curious to the declared state of "Gel" vs "Gelatine". I guess they never brought that up in class. But hey, If putting people down and demeaning others is your thing than carry on, just not with me.



Relax.

I study quantum mechanics. No need to get mad over the internet. Laugh it off.

A wise man once told me when I was raged:

":lol:

Have some humility."


--------------------
Gyo's Better Grows
TNF Q&A :rockon:
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Dominus fortunae meae sum

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Invisiblebootster
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Re: Disappearing agar... evaporation? [Re: taGyo]
    #21305393 - 02/20/15 06:38 PM (9 years, 10 months ago)

It's all good man. Of course I can't talk about anything else so I'll just quietly slip away now.

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Offliner00tuuu123
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Re: Disappearing agar... evaporation? [Re: taGyo]
    #21305409 - 02/20/15 06:41 PM (9 years, 10 months ago)

Quote:

taGyo said:
Go to walmart.

Buy transpore tape.

Tape the sides on opposite ends. Works like a charm. When you're ready to open the petri just stick something in between the open space on the sides and rip the tape off. Don't bother cleaning the tape, you have a high chance of cracking the petri.

I used to do this before I got parafilm. The lid keeps all contams out, the tape is just to hold it in place.

Transpore isn't as sticky as Scotch or other brands. I did this with Scotch and it failed miserably. Extremely hard to take off.



Glad you brought up transpore is it as breathable as micropore? The transpore seems more sticky and durable than the micropore.


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