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Home Q & A Board Laboratory Help Introductory Courses
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nursing111 nursing111
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11 years ago
I dont understand how you come up with calculations to do dilutions. The problem i'm given is that the stock solution of bromothymol blue is 15 ppm. It says to set up a  dilution scheme and use it to produce samples of different concentrations (0, 1, 2, 5, 10, and 15).Then i measure the absorbance with the spectrophotometer,e tc.           Thank you for any help!
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#1
11 years ago
Assume, say, a total volume of 15ml.  0 is pure water, 1 is 1ml + 14ml water, 5 is 5 ml + 10 ml water and so on.  15 is undiluted.
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rizzy81rizzy81
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11 years ago
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