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Thread: Need to Shake

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    Spiccolli's Avatar
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    May 2012
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    Need to Shake

    Every time I pick up a reagent to put drops, I feel like shaking it. Is this necessary? Is this OK?
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    Lana537's Avatar
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    Do Not Shake

    Do not shake reagents. Shaking introduces air bubbles into solution. The testing depends on counting the number of drops of a reagent. If you have shaken yours, and if you have introduced tiny air bubbles into solution, you will skew your test results.

    Lana
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    wetchem's Avatar
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    Re: Need to Shake

    Lana is correct.
    However, if you gently invert the bottle a few times without introducing air into the solutions, that shouldn't be an issue.
    We do this all of the time with our volumetric flasks in the lab to ensure the solutions are well mixed after they've sat overnight.

    -wc
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