Students may deal with biological materials that contain genetic information and capable of reproducing itself or being reproduced in a biological system. These materials include: microorganisms, animals (live tissues and biological fluids), plants, human tissues or biological fluids, and microbial toxins. These materials can be considered as biohazards that present a risk or potential risk either directly through infection to the human and animal or indirect through damage to the environment.

To avoid any type of contamination in lab sessions where biohazardous materials are being handle, several points should be considered:

• Washing hands before and after – with anti-bacterial soap – the lab session.

• Wearing protective equipment, such as: lab coat, gloves, and safety goggles, to minimize exposure to biohazards.

• Immediate cleaning for any biological spills.

• The work counter and equipment used should be cleaned after each session with bleach.

• Contamination equipment must be dispose in a separate container “biohazardous waste can”.