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Thread: All you chemists out there

  1. #1
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    All you chemists out there

    What equipment do I need to:
    1) exactly measure 1ml of a liquid
    2) exactly measure 10ml of a liquid
    3) exactly measure 1 litre of a liquid

    And where do I buy them?

    Likewise a consender and a biggish flask it'll fit into (1.5 litre flask + condenser?)

    Cheers - and no it's biodiesel not "P"
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    Quote Originally Posted by ManDownUnder
    and no it's biodiesel not "P"

    Glad you clarified that!
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    Quote Originally Posted by ManDownUnder
    Cheers - and no it's biodiesel not "P"
    Yeah? How far does 1ml of biodiesel get you?

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    A lab supplies store?

    Or yew kin jus' get gran' pappy's ol' stihl outa th' back o' ... Shewt y'all noed ah Kaint ell ya that!
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    Quote Originally Posted by WRT
    Yeah? How far does 1ml of biodiesel get you?
    Depends on the engine size, wind resistance, surface, load, total systemic friction (engine, drive train and road contact), gearing and wind direction...

    now... back to the q... please.....
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    1ml and 10ml ; a pipette (2 sizes)
    1 litre - a measuring cylinder

    Condenser - do you mean a reflux condenser ? Or a "normal" one (can't remember what they're called). Or do you need a fractionating column ?

    Round bottomed flask I presume - I'm guessing you're heating this ?

    You'll need some mounting hardware. And a heat source. And another vessel to catch what comes out of the condenser . And a water supply and drain.

    EDIT : Uh, just coccured to me - the stuff you're pipetting ? Not toxic, fuming, corrosive etc ? And the feed stock to the condenser? Not flammable ? Explosive ? Toxic fumnes ? If they are then the plot gets much more complicated.
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    How about the homebrew spirits shop? Top of Mt Ededn Rd opposite Galbraiths?
    Surely they would have something or know where to aquire?

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    just break into a school science lab at night, it should have everything you need and plenty of time to do it there too.
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    i could stel equipment from my lab... but my boss might notice..

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    1. A flask
    2. A Flask
    3. A Flask

    Or you can do the kiwi way and just reckon its about right?
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  11. #11
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    I'd use a volumetric flask for the 1L, but it depends on how exact you want to be.

    And if you are getting pipettes, you'll need a pipette sucker too. Pipetting by mouth is a bad idea.

    You can get quickfit flasks, condensers etc that all fit together interchangably.

    A lab supply place like Biolab or Sigma Aldrich might be able to help you.

    If I was evaporating flammable stuff like biodiesel I'd want to be doing it in a fume hood with a spark proof heat source.

    It would almost be easier to chat to the engineering school at Auckland Uni and see if you can get an undergrad student to give you a hand as an honours project or something. Or a college student looking for an idea for the science fair.

    Care to elaborate on what you are doing? I'm intrigued now.

  12. #12
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    Quote Originally Posted by ManDownUnder
    What equipment do I need to:
    1) exactly measure 1ml of a liquid
    2) exactly measure 10ml of a liquid
    3) exactly measure 1 litre of a liquid

    And where do I buy them?
    1) A pipette - fish/pet shop might have something with a pippete
    2) a measure glass - briscoes might have something for cooking
    3) 1L coke bottle - buy in foodtown, dairy or local service station
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    Quote Originally Posted by ManDownUnder
    What equipment do I need to:
    1) exactly measure 1ml of a liquid
    2) exactly measure 10ml of a liquid
    3) exactly measure 1 litre of a liquid
    Take the cheap option and buy a 1ml measurer that you can use once, 10 times and 1,000 times respectively.
    "Standing on your mother's corpse you told me that you'd wait forever." [Bryan Adams: Summer of 69]

  14. #14
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    yea hitcher's got the best idea.

    i seem to remember our chem teacher telling us last year that the glass 50ml pipettes were about $100, but then again they were pretty accurate.
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  15. #15
    You can find a graduated oil measure in most bike shops...for measuring 2 stroke and fork oils.What's the difference between a pipette and a burret? I borrow a 50ml one off my engine guy to measure combustion chamber and pre com chamber volumes...we call it a burrete,but we are just dumb tradesmen,sounds like a fancy name to us,must be right.

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