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I would like to ask a little question??


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8 replies to this topic

#1 tana_jung

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Posted 17 June 2009 - 02:09 AM

I worked my reseach about antimicrobial susceptibility testing..

So I used many many tubes with wrapping parafilm on the caps..

when I finished my work, I steriled (before washing) tubes and didn't remove parafilm on tubes..

Now my caps of tubes are covered with parafilm..

I would like to remove it...

what should I do??

please help me!!! :)



Tan"

ps.. I try to use detergent wash it, but it's difficult to wash..

#2 phage434

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Posted 17 June 2009 - 04:23 AM

If these are glass tubes, then chloroform will likely dissolve the parafilm. If they are plastic, the chloroform might also dissolve the tubes. A wash with a series of chloroform baths will remove most of the residue, I would think. I haven't tried this. Xylene, acetone, MEK might also work. Do this in a fume hood, of course.

#3 GeorgeWolff

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Posted 17 June 2009 - 01:43 PM

start over

#4 gebirgsziege

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Posted 19 June 2009 - 04:38 AM

You can easily peel melted parafilm off glass tubes.....a lot of work, though.
A man cannot be too careful in the choice of his enemies. (Oscar Wilde)

#5 HomeBrew

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Posted 19 June 2009 - 06:29 PM

Burn it off?

#6 GeorgeWolff

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Posted 20 June 2009 - 06:21 AM

Don 't think so Homebrew. It will only char. Acetone or xylene would prob work - consider paraffin as the substance.

#7 HomeBrew

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Posted 20 June 2009 - 03:10 PM

Good point.

#8 tana_jung

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Posted 21 June 2009 - 08:15 PM

Thanks in advance for your great answers..

but I would like to remove parafilm on plastic cap..

i'm not sure, plastic cap will resist to acetone, xylene and chloroform???

#9 phage434

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Posted 22 June 2009 - 12:37 PM

Polypropylene is resistant. Polystyrene, polyethylene, are not. You're the scientist, and have many of these. Do the experiment.




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