Laboratory Operations

The laboratory is a hybrid site of chemical and biological experiments with a large array of complex and hazardous equipment. Maintenance and preventative measures, and a solid foundation of good practice is essential for a smooth running laboratory.

Health and Safety

Quality Management Systems

To write a QMS, requires significant time and resources. Experience focuses the time and effort.

Laboratory Design

A Class II biological laboratory requires highly specific architectural and HVAC standards to ensure maximum safety. The fundamental design parameters for a safe and functional BSL-2 facility include:

1. Airflow & Ventilation

  • Directional Airflow: Maintain negative air pressure relative to corridors/offices so air flows into the lab, keeping pathogens contained.
  • Ventilation Rate: Aim for \(8\) to \(12\) air changes per hour (ACH).
  • Exhaust: 100% of exhaust air should ideally be discharged outdoors and not recirculated.

2. Primary Containment (Biosafety Cabinets)

  • Class II BSCs: These ventilated cabinets provide triple protection for the operator, product, and environment.
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  • Placement: Position BSCs away from high-traffic areas, doors, and supply air diffusers (which can disrupt the protective air barrier).
  • Types:
    • Type A2: Recirculates 70% of air and exhausts 30%.
    • Type B2: Hard-ducts and exhausts 100% of air; required if working with volatile toxic chemicals.

3. Layout & Workflow

  • Controlled Access: Laboratories must have locking doors, and entry should be restricted when work is in progress.
  • Separation: Maintain a spatial separation of distinct activities to avoid cross-contamination.
  • Surface Materials: Benches, walls, and floors must be non-porous, chemically resistant, easy to clean, and able to withstand decontaminants (e.g., bleach, alcohols).

4. Safety Equipment & Utilities

  • Eyewash Station: Must be readily available and ideally located within the laboratory
  • Handwashing Sink: Hands-free or foot-operated sinks must be installed near the exit door.
  • Emergency Power: A backup generator or Uninterruptible Power Supply (UPS) is recommended for critical containment and incubators.

5. Biosafety Signage

  • Hazards: Doors must clearly display the universal biohazard symbol (For Level 2), the biosafety level, entry requirements, and the contact information of the principal investigator or lab manager.