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Lab PreparationIn this lab you will be designing an experiment to
test the effectiveness of a product that contains an antibacterial chemical.
Make an INFORMED prediction.To be INFORMED you need background info:
- Ingredients in each product-Claims made by the manufacturer
Must be written in IF…THEN… format
IF (Manipulated variable)THEN (Responding variable)
Preparing Petri dish
Divide the BOTTOM of the dish into 3 or 4 sections depending on the number of products you are testing.
Write your initials and class period on the SIDE of the LID.
Swabbing a sampleUse the sterile swab and slide it across the
sample area 2-3 times.
If you are testing:Hand sanitizer: swab your fingers/handsMouthwash: swab the inside of your cheeksDisinfectant: swab a surface that you would use
the disinfectant on