Publication No. 10413
Student Laboratory Kit
Materials Included In Kit
3M® Petrifilm™ Yeast and Mold Count Plates, 50
Additional Materials Required
Water, distilled (optional)
Exposed Petrifilm™ Yeast and Mold Count Plates will contain viable yeast and/or mold cultures. Do not separate or handle the plates unnecessarily. Handle the plates using sterile techniques. Use eye protection and chemical-resistant gloves. Always clean work areas and wash hands after working with microbiological materials.
Please consult the Biological Waste Disposal section in your current Flinn Scientific Catalog/Reference Manual for general guidelines and specific procedures, and review all federal, state and local regulations that may apply, before proceeding. Even though the amount of media on Petrifilm plates is very limited, and thus restricts the volume of growth, Petrifilm plates should be handled with care. Open the plates and soak them in 10% bleach solution or autoclave before disposing according to Flinn Suggested Disposal Method #26a.
Correlation to Next Generation Science Standards (NGSS)†
Science & Engineering PracticesPlanning and carrying out investigations
Analyzing and interpreting data
Constructing explanations and designing solutions
Disciplinary Core IdeasMS-LS2.A: Interdependent Relationships in Ecosystems
HS-LS2.A: Interdependent Relationships in Ecosystems
Scale, proportion, and quantity
MS-LS2-1. Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.
“A west suburban high school infected with toxic mold will be closed indefinitely as a safety precaution while thorough environmental tests are done there.”
4/6/2001 Chicago Sun-Times
A school costs millions of dollars? Mold is everywhere. How could this happen?
Molds are simple microscopic organisms that play a major role in the ecosystem by helping to break down dead materials. Mold spores are nearly everywhere and actively growing molds can be found wherever growth conditions are favorable. Molds need only a few basic things to thrive—moisture, food and a surface to grow on. When a mold spore lands on such a spot, it usually starts to grow and reproduce rapidly.
Exposed Petrifilm Yeast and Mold Count Plates will contain viable yeast and/or mold cultures. Do not separate or handle the plates unnecessarily. Handle the plates using sterile techniques. Use eye protection and chemical-resistant gloves. Always clean work areas and wash hands after working with microbiological materials.