Final answer:
The proper BSI needed on every call are gloves and goggles, which are part of the required PPE when handling BSL-2 level agents. This level requires additional safety practices beyond standard PPE, like biohazard signage and proper disposal methods. Higher BSLs impose more stringent safety measures like full-body protective suits in BSL-4 labs.
Step-by-step explanation:
The question you've asked pertains to the personal protective equipment (PPE) required when attending a call and working with biological safety levels, specifically BSL-2. When working with BSL-2 agents, such as specific bacteria, additional safety practices are imperative to prevent the spread of infection and protect laboratory personnel.
The answer to what BSI is needed on every call (gloves and goggles) is gloves and goggles. These are standard PPE requirements for handling materials associated with BSL-2 laboratories to prevent mucous membrane exposure and accidental skin contact with infectious agents. For BSL-2 safety practices, some additional measures beyond standard gloves and goggles include biohazard warning signage, restricted access, and proper disposal methods for bacterial cultures, such as autoclaving or other decontamination processes before disposal.
BSL-3 and BSL-4 labs require even more stringent safety practices due to the higher risk associated with the infectious agents handled in these facilities. For example, BSL-4 labs require full-body protective suits with their own air supply, stringent decontamination procedures, and the facility to be isolated with dedicated supply and exhaust systems.