Affordability - Based on cost of initial unit, user training, service life, shelf life, maintenance, replacement parts, extended warranty, and option costs.

Capability - Based on durability/integrity, ease of breathing, ease of use, compatibility with other pieces of equipment, types of available environmental specific canisters, capability to move canisters to different APR connections, decontamination capabilities, available sizes, skin protection, and hydration capabilities.

Deployability - Based on time/ease of donning & doffing, storage requirements, type of carrying case, compatibility with helmet/head protection, and transportation requirements.

Maintainability - Based on deconability, sanitization, shelf life, repair/replacement parts, technical support, and warranty.

Usability - Based on comfort, ease of use, visibility, communication, proper fit and range of motion.