The Chronicle of the Horse
MagazineNewsHorse SportsHorse CareCOTH StoreVoicesThe Chronicle UntackedMarketplaceDates & Results
 
Results 1 to 7 of 7
  1. #1
    Join Date
    Aug. 23, 2002
    Location
    Prospect, ME
    Posts
    4,563

    Default Math Dummy - ppm to mg conversion?

    Can someone tell me how to convert ppm to gm? Specifically if I'm feeding a grain with 130ppm of Copper, how many mgs per pound am I getting?

    TIA...
    -Jessica



  2. #2
    Join Date
    Mar. 26, 2008
    Location
    Maine
    Posts
    1,855

    Default

    http://www.peteducation.com/category.cfm?c=0+1305

    bottom table says you multiply the ppm by 0.4536 to get the mg/lb. Therefore, 130ppm(.4536) = 58.968 mg/lb
    "Last time I picked your feet, you broke my toe!"



  3. #3
    Join Date
    Aug. 23, 2002
    Location
    Prospect, ME
    Posts
    4,563

    Default

    Ahah! I needed a table like that! The only stuff I could find was about liters, which wasn't helping. Thank you
    -Jessica



  4. #4
    Join Date
    Dec. 13, 1999
    Location
    Greensboro, NC
    Posts
    35,213

    Default

    It helps to understand what you're actually converting, at least for me, so it makes sense, instead of just having some # to multiply by

    ppm is mg per kg. So, 1ppm is 1mg per kg of "stuff".

    1kg is 2.2lb, so 1ppm is 1mg per 2.2lb.

    If you have something that is 300ppm, and you're feeding 1lb, then divide everything by 2.2 to get your mg per 1lb - 300/2.2=136.36mg in that 1lb of stuff. Divide further by 16 if you need to get to the ounce level.

    I just find 2.2 easier to remember than .4536
    ______________________________
    The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET



  5. #5
    Join Date
    Feb. 4, 2009
    Location
    NCC DE
    Posts
    2,088

    Default

    59



  6. #6
    Join Date
    Jan. 16, 2002
    Location
    West Coast of Michigan
    Posts
    36,312

    Default

    one part per million = one milligram per kilogram
    Click here before you buy.



  7. #7
    Join Date
    Aug. 23, 2002
    Location
    Prospect, ME
    Posts
    4,563

    Default

    Quote Originally Posted by JB View Post
    It helps to understand what you're actually converting, at least for me, so it makes sense, instead of just having some # to multiply by

    ppm is mg per kg. So, 1ppm is 1mg per kg of "stuff".

    1kg is 2.2lb, so 1ppm is 1mg per 2.2lb.

    If you have something that is 300ppm, and you're feeding 1lb, then divide everything by 2.2 to get your mg per 1lb - 300/2.2=136.36mg in that 1lb of stuff. Divide further by 16 if you need to get to the ounce level.

    I just find 2.2 easier to remember than .4536

    That makes *much* more sense! Thank you!
    I just start to glaze over when I'm trying to figure out weights when the feeding recommendations are per pound, but the nutritional info is all in metric amounts... metric makes so much more *sense* than the imperial system.
    -Jessica



Similar Threads

  1. dummy question! How is it done?
    By tidy rabbit in forum Sport Horse Breeding
    Replies: 7
    Last Post: Jun. 20, 2010, 01:24 PM
  2. What IS a dummy foal?
    By vineyridge in forum Sport Horse Breeding
    Replies: 2
    Last Post: May. 31, 2010, 04:39 AM
  3. dummy question
    By mustangsal85 in forum Eventing
    Replies: 4
    Last Post: May. 9, 2010, 11:53 AM
  4. TB pedigree question from a dummy
    By bornfreenowexpensive in forum Eventing
    Replies: 14
    Last Post: Dec. 9, 2009, 02:28 PM
  5. What is a Dummy Foal?
    By luvs2ridewbs in forum Sport Horse Breeding
    Replies: 5
    Last Post: Aug. 12, 2009, 10:12 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
randomness