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  1. #1
    Fiskevatten's Avatar
    Fiskevatten is offline Associate Member
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    Problem with dosage measurement

    Hey fellow trainers!

    I think i'm making a huuge rookie mistake and want to clear it out before it goes to far.
    When i inject 1ml, the little black thingy in the tube (syringe). Should i stop at 1ml picture 1 or 2? (see picture)
    I'm currently going for picture 2

    I am an amazing artist so i hope you guys and girls understand the picture

    Problem with dosage measurement-syringe.jpg

  2. #2
    AD's Avatar
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    pic2

  3. #3
    Gaspaco's Avatar
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    Pic 1. is 0.5ml
    Pic 2. Is 1ml

  4. #4
    Combatant is offline New Member
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    Yes for sure pic 2. If you look at the end of the syringe it's shaped like the end of the rubber in order to cleanly wipe the syringe walls and expel all fluid. So if you go with pic 2 you will be getting a true dose of 1 ml

  5. #5
    austinite's Avatar
    austinite is offline HRT Specialist ~ AR-Platinum Elite-Hall of Famer ~
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    Bro, that looks like a 16 gauge. You do not want to inject with that.
    ~ PLEASE DO NOT ASK FOR SOURCE CHECKS ~

    "It's human nature in a 'more is better' society full of a younger generation that expects instant gratification, then complain when they don't get it. The problem will get far worse before it gets better". ~ kelkel

  6. #6
    DB1982's Avatar
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    This pic should be a sticky. Lol but yeah 2 is right

  7. #7
    OnTheSauce is offline Banned
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    Quote Originally Posted by austinite View Post
    Bro, that looks like a 16 gauge. You do not want to inject with that.
    Hahahshaha. Awesome

  8. #8
    Fiskevatten's Avatar
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    Perfect! So far so right, went from needle scare to no prob so better be sure when do it yourself.
    Appreciated! )

  9. #9
    Live for the PUMP's Avatar
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    Pic 2. But personally I go a fraction of a hair further. Juust to make sure I am getting the full dose. It seems the plunger (black thingy) has a little point to it.

  10. #10
    austinite's Avatar
    austinite is offline HRT Specialist ~ AR-Platinum Elite-Hall of Famer ~
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    Quote Originally Posted by Live for the PUMP View Post
    Pic 2. But personally I go a fraction of a hair further. Juust to make sure I am getting the full dose. It seems the plunger (black thingy) has a little point to it.
    You could use a little air in the barrel instead of extra gear. That way you get all the gear out of the pin.
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  11. #11
    Live for the PUMP's Avatar
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    Quote Originally Posted by austinite View Post
    You could use a little air in the barrel instead of extra gear. That way you get all the gear out of the pin.
    Never thought of this. Maybe ill try that next time. How much gear do you think is in a 1" pin? I know every drop counts.

  12. #12
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    Quote Originally Posted by austinite View Post
    You could use a little air in the barrel instead of extra gear. That way you get all the gear out of the pin.
    got to point slightly downwards with air in the syringe. so that the air will be the last to be expelled. for first-timers, don't try this at home

  13. #13
    austinite's Avatar
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    Quote Originally Posted by Live for the PUMP View Post
    Never thought of this. Maybe ill try that next time. How much gear do you think is in a 1" pin? I know every drop counts.
    lol. Fark! Ok so assuming a 23g needle, wiki says the outside diameter is 0.02525 inches (actually not relevant), and the inner is 0.01325 inches. Length is 1" although not quite because of the shaved off end but whatever,we'll assume it's a damn perfect tube...

    That's 0.00595 CC. (used an online calculator, sorry basketballfan22)

    So if we're pinning 250mg/ML, that would equal 1.4875 mg's.

    Who knows, I could have it all wrong, lol.
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  14. #14
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    Quote Originally Posted by austinite View Post
    lol. Fark! Ok so assuming a 23g needle, wiki says the outside diameter is 0.02525 inches (actually not relevant), and the inner is 0.01325 inches. Length is 1" although not quite because of the shaved off end but whatever,we'll assume it's a damn perfect tube...

    That's 0.00595 CC. (used an online calculator, sorry basketballfan22)

    So if we're pinning 250mg/ML, that would equal 1.4875 mg's.

    Who knows, I could have it all wrong, lol.
    Lmao. Well I didn't get the same answer. We are dealing with a cylinder, so V = πr^2h, where V = volume, π = pi, r = radius, and h = height. Therefore assuming the dimensions provided are correct, we have

    V = π(0.01325/2)^2(1) ≈ 0.0001379 in^3.

    Converting this to cm^3, we get

    (0.0001379 in^3)(2.54 cm/1 in)(2.54 cm/1 in)(2.54 cm/1 in) ≈ 0.00226 cm^3 or 0.00226 cc.

    Therefore at a dose of 250 mg/mL, we have

    0.00226 cc = 0.00226 mL, and (0.00226 mL)(250 mg /1 mL) ≈ 0.5649 mg.

    *Note, I saved the full decimal versions throughout the calculations; so the end result may not agree completely with what I typed, e.g. (0.00226)(250) = 0.565, not 0.5649.*
    Last edited by basketballfan22; 06-05-2013 at 12:23 AM.

  15. #15
    austinite's Avatar
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    lmao! Ok then, there you have it. insignificant volume. Unless you tally up years of that...

    Good job, BBfan.
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  16. #16
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    You mean SpursFan.

  17. #17
    austinite's Avatar
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    ^ Yes!!
    ~ PLEASE DO NOT ASK FOR SOURCE CHECKS ~

    "It's human nature in a 'more is better' society full of a younger generation that expects instant gratification, then complain when they don't get it. The problem will get far worse before it gets better". ~ kelkel

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