User:Mary Mendoza/Notebook/CHEM 581: Experimental Chemistry I/2014/10/01

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Malachite Green Diffusion through PVA-clay film

  • I prepared 20 ppm malachite green from a 195 ppm malachite green stock solution provided by Dr. Hartings.
  • Using dilution equation, the volume of 195 ppm of malachite green required to make 25 mL of 20 ppm was calculated to be 2.56 mL.
  • Using a vernier caliper, the thickness of the PVA-clay film used for diffusion is 0.51 mm.
  • The diffusion assembly was prepared according to the picture below, containing 10 mL of 20 ppm Malachite green on the left chamber and 10 mL of distilled, deionized water:
Status at 9:16 AM
Status at 9:16 AM


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