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  1. #1
    Ross Chambers's Avatar
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    Damn! Just bought a 3 beam balance


  2. #2

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    They are mistaken. We are simply entering a period of weak gravity.

  3. #3
    Mike Wilde's Avatar
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    Don't slag the humble triple beam.
    That and a simple pan balance good to 50g will do almost all the DIY chem mixing you are likely to need, if you don't mix more than 4L of something at a time

    They are affordable, and durable.
    I tare mine when I use a Dixie cup on the pan with a small length of wire that hangs from the end of the beam.
    I have a plastic container filled with the right number of screws that hangs there when I want to measure over 610g, up to 1110g.

    I appreciate the concern in the BBC story, but for my purposes if I am consistent to 1% between subsequent batches I think I am doing just fine.
    The thing came from an antique shop in Brooklyn over the *bay when it was a person to person affair about 7 long years ago. Oh, I do miss those days.
    my real name, imagine that.

  4. #4
    dpurdy's Avatar
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    That kilo of platinum would be getting smaller and smaller if I had the lock and key.

  5. #5
    JOSarff's Avatar
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    Well, if their just going to chuck it . . . .
    There is no such thing as taking too much time, because your soul is in that picture. -Ruth Bernhard

  6. #6
    Ross Chambers's Avatar
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    Quote Originally Posted by Mike Wilde View Post
    Don't slag the humble triple beam.
    Just joking, I find it of enormous value ever since I was bequeathed a heap of dry chemistry. Before that I was using an electronic scale which lasted a few months. Perhaps it's not a good idea to buy lab equipment from transient merchants in the forecourts of shopping malls. It seems that the triple beam will be indestructable and not fail me at a critical time. It just took a long time to find one.

    On another note: I do wonder how the French feel about one of their national treasures, the platinum standard kilo specimen being called into doubt?

  7. #7
    Mick Fagan's Avatar
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    I have a triple beam as well, actually it's a quad beam and I'm sure if you look at yours closely you'll see a fourth beam for the sliding weight at the rear.

    Had mine for about 25 years, it's not slower than electronic scales. For my work I required some very accurate electronic scales, which I purchased about 15 years ago. Beauty, I thought, never need to fiddle with the triple beam scales again.

    I used the electronic scales about four, maybe five times, then gave up on them. Once or twice I looked up a note on a possible adjustment of a chemical amount, by the time I found the note and worked out what I was going to do, the scales had switched off.

    Then there is the not quite flat battery syndrome, talk about frustration!

    Mick.

  8. #8
    Diapositivo's Avatar
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    The only thing that will change are the operating instructions for German and Swiss chemical products.

    "In order to obtain 1 litre of solution, just mix 125,0000000000000001 grams of powder A, mix until complete dissolution, than add 250,0000000000000001 grams of power B. Then add water until 1 litre".

    Fabrizio
    Fabrizio Ruggeri fine art photography site: http://fabrizio-ruggeri.artistwebsites.com
    Stock images at Imagebroker: http://www.imagebroker.com/#/search/ib_fbr



 

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