The multimedia microscope slide packages for food science come in a special cardboard box with an explanatory brochure and plastic box of 6 microscope slides: • Corn flour spoiled with spores of corn smut (Ustilago) • Flour spoiled with mites (Tyroglyphus farinae) • Mold in spoiled foodstuffs • Rye flour spoiled with moths • Sour milk, stained for bacteria • Wheat flour adulterated with chalk