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  1. #1
    Join Date
    Feb. 1, 2012
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    Default PPM conversion to MG! HELP ME!

    Okay, someone please help me, it's making my head hurt!

    Here are the facts about the grain:
    1 lb is the feeding rate
    Selenium: 2.75 PPM
    How many milligrams is that???


    Another one:
    4 lbs is the feeding rate
    Selenium: .50 PPM
    How many milligrams it that?

    Why can't the grain companies just list selenium by mg/lb since that is how its measured to instruct on how much a horse should have daily!?
    "If you think nobody cares about you, try missing a couple payments..."



  2. #2
    Join Date
    Feb. 6, 2000
    Location
    MA
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    14,249

    Default

    One part per million is equal to one milligram per kilogram.

    So, in the first example, you have 1 lb, equal to 0.454 kg.
    Multiply 0.454 x 2.75 to get the Se. (1.25 mg).

    Do the second one yourself, and I'll grade it.
    "It's like a Russian nesting doll of train wrecks."--CaitlinandTheBay

    ...just settin' on the Group W bench.



  3. #3
    Join Date
    Jan. 16, 2002
    Location
    West Coast of Michigan
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    36,325

    Default

    "Parts per million" sounds so teeny-tiny, whereas "milligrams per kilogram" sounds pretty substantial. Yet they are the same.

    To convert to pounds, take your 2.75mg/kg and divide by 2.2 (2.2 pounds are in a kilogram) to get 1.25mg per pound.

    The other one you have to do yourself or Ghazzu will accuse me of being a know-it-all gunner (which I was, in school, LOL) but it's going to obviously be a lot less per pound, right? By feeding 4 pounds you're going to get close to what a pound of the other stuff will get you, but not quite as much.

    If you can keep "milligrams per kilogram" in your head and roughly divide by two, you can easily get a rough estimate of "milligrams per pound" if that is the unit of measure you are used to using. However, keeping units of measure in the same scale (metric) is pretty standard.
    Click here before you buy.



  4. #4
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    Feb. 1, 2012
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    Default

    So .5 divided by 2.2 & then multiply by 4 (as in 4 lbs to find the total selenium in 4 lbs per day.

    That's .9 mg of selenium in 4 lbs
    "If you think nobody cares about you, try missing a couple payments..."



  5. #5
    Join Date
    Jan. 16, 2002
    Location
    West Coast of Michigan
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    Default

    Yup.
    Click here before you buy.



  6. #6
    Join Date
    Feb. 1, 2012
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    Vermont
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    Default

    I asked my vet & he told me to "go do my math" Hehe! Thanks to you guys, I was able to reaping back & now he thinks i'm a smarty!
    "If you think nobody cares about you, try missing a couple payments..."



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