Efficient Biology Dilution Techniques for Accurate Results | Homework Help

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SUMMARY

The discussion centers on the correct method for diluting blood with saline solution, specifically a 1:10 ratio. The correct approach involves mixing 1 cm3 of blood with 9 cm3 of saline to achieve the desired dilution. Participants clarified that while both methods yield similar results, the precise 1:10 dilution is essential for accurate analytical work. A resource link was provided for further guidance on solution preparation.

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  • Understanding of dilution ratios and concentration calculations
  • Familiarity with laboratory techniques for preparing solutions
  • Basic knowledge of blood and saline properties
  • Experience with analytical methods requiring precise measurements
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  • Research the principles of solution preparation and dilution techniques
  • Learn about the importance of accurate dilutions in analytical chemistry
  • Explore laboratory best practices for handling biological samples
  • Review resources on preparing saline solutions for various applications
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This discussion is beneficial for biology students, laboratory technicians, and anyone involved in preparing biological solutions for experiments or analytical purposes.

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Homework Statement



Here goes the question: I was told to dilute blood with saline solution, in the ratio of 1 part of blood to 10 parts of saline. I need around 20 cm3 of the blood solution.


2. The attempt at a solution

I did it by placing 1 cm3 of blood into a testube, then follow by 9 cm3 of saline solution. Is my way correct? Or I'm suppose to mix 1 cm3 of blood with 10 cm3 of saline?

Thanks for helping :)
 
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I would take 1 mL of blood and 10 mL of saline, that's what you were told to do.

1:9 would work if you were asked to dilute ten times.

Not that that matters much (unless you are doing some precise analytical work). Difference between final concentrations is in the 1% range.
 
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