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Soap - Coggle Diagram

- - - - 1/ Crush 10g of THE MADE SOAP and put it into a 200ml beaker.
      - 2/ Add 50ml distilled water into the beaker.
      - 3/ Shake the beaker and measure the volume of lather.
      - 4/ Redo step 1-3 for 3 times and record the results.
      - 5/ Redo step 1-4 for THE COMMERCIAL SOAP and compare the result.
  - - - 1/ Weight the empty beaker, record it.
      - 2/ Measure 50g (20g if the sample is not much) of THE MADE SOAP and crush it into small pieces. Then put the soap into the beaker and weigh it. This is the ORIGINAL MASS.
      - 3/ Put the beaker into the microwave for 10s. Then weigh it again.
      - 4/Repeat step 3 until its mass becomes stable. This is the FINAL MASS.
      - 5/ Calculate the percentage of moisture by using the formula:
        
        (ORIGINAL MASS - FINAL MASS)/ (ORIGINAL MASS - BEAKER MASS) x 100.
      - 7/ Redo steps 1 - 6 for THE COMMERCIAL SOAP. Compare the results.
      - 6/ Redo step 1-5 for 3 times.
  - - - 1/ Cover hands under dirt for 20s.
      - 2/ Wash hands with THE MADE SOAP for 15s and rinse through water fully.
      - 3/ Shine UV blue light to the hands. Take photos and estimate the percentage of cleansing.
      - 4/ Redo step 1 - 3 for 3 times.
      - 5/ Redo step 1-4 for THE COMMERCIAL SOAP, and compare the results.