Bacteria are often associated with various diseases, infections, and other sicknesses. Certain bacteria can have negative effects on other living organisms, but in reality the vast majority of bacteria range from harmless to incredibly beneficial. This kit contains materials for students to use in investigating bacteria in their environment. While learning proper microbiological techniques, you will test hands, mouths, and your classroom for bacteria, before and after cleaning. Kit Includes: 2 x 200mL Nutrient Agar 20 Sterile Petri Dishes 20 Sterile Cotton Swabs DOT Info: Non-regulated