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Potassium Thiocyanate 100ml
Biuret solution 100ml
Legend area measure 12in x 24in
cities and utility companies
Den-Test Kit bottles-and-containers Potassium Thiocyanate 100mlDen Test is a science experiment which allows students to cultivate bacterial growth from their own teeth. See the difference in bacteria growth development from the "before brushing" and "after brushing" samples. Used also to illustrate bacterial growth on dirty hands, desk tops, money, etc. Includes 24 sterile petri dishes, 48 sterile swabs, 2 bottles agar gel and instruction manual. Grades 5 10. Den Test is a science experiment which allows
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