Airflow control and monitoring devices, namely, electronic sensors for monitoring the air flow through air filters being sold as a unit with self-contained isolation enclosures not for medical purposes; air filter monitoring devices, namely, electronic sensors for monitoring the air flow through air filters being sold as a unit with self-contained isolation enclosures not for medical purposes; monitoring devices, namely, electronic sensors for detecting chemicals and gases being sold as a unit with self-contained isolation enclosures not for medical purposes; monitoring devices, namely, electronic sensors for monitoring temperature and humidity being sold as a unit with self-contained isolation enclosures not for medical purposes; visual and acoustic alarms being sold as a unit with self-contained isolation enclosures not for medical purposes; electronic controllers being sold as a unit with self-contained isolation enclosures not for medical purposes; electrical pumps for transferring chemicals being sold as a unit with self-contained isolation enclosures not for medical purposes; replacement parts, namely, electronic sensors for monitoring the air flow through air filters, electronic sensors for detecting chemicals and gases, electronic sensors for monitoring temperature and humidity, visual and acoustic alarms, electronic controllers, and electrical pumps for transferring chemicals