Saran wrap = good membrane?

Discussion in 'Chemistry' started by gordongekko, Nov 21, 2011.

  1. gordongekko Registered Member

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    I was wondering if saran wrap would be a sufficient membrane in the lab.

    Will electrons transfer through saran wrap well enough? I put saran wrap on a multimeter and got half an ohm of resistance. I feel like either scientists are in denial that they used kitchen saran wrap as their "polyvinyl membranes", or I'm a total noob. :)
     
    Last edited: Nov 21, 2011
  2. Search & Destroy Take one bite at a time Moderator

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    I have no idea regarding resistance to ohms. Saran wrap is strong though - most hashish smuggled out of Nepal is wrapped with saran, eaten, and poo'd. So it's tough enough to resist our stomach acid.
     
  3. phlogistician Banned

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    Given it's prone to sticking to itself due to static electricity, and that phenomenon doesn't occur in conductors, I'd question how you measured that?
     
  4. gordongekko Registered Member

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    With a good contact, and with a multimeter of course.
     
  5. Believe Happy medium Valued Senior Member

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    Try it out, its not like its expensive.
     
  6. arauca Banned

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    is a good oxygen barrier.
     
  7. phlogistician Banned

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    OK, but still you have told us only half the story,... what dimensions were the piece or saran wrap? What was underneath it?

    The probes on my multimeter are really quite pointy, and would easily penetrate saran wrap, and possibly then give a combined measurement of the wrap and whatever it's placed upon. Were you measuring this atop a decent insulator?
     
  8. gordongekko Registered Member

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    Very small, I think .75 mils.

    I was sure that the probes didn't penetrate. It took some electrode surface area to get a reading though. Even just using the sides of the probes, I wrapped saran warp once around one electrode, and made contact with the other. Got about 0.5ohms.
     

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