Comparison of the germ content of washed and unwashed hands

LB6.1.2.2
Comparison of the germ content of washed and unwashed hands
Comparison of the germ content of washed and unwashed hands

Description

In this experiment the students compare the germ content of washed and unwashed hands. They use agar plates and learn that proper hand washing reduces the bacterial content many times over.

Components of equipment sets

1 30945  4 
Universal pencil LD
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