ChemFAST Elite laboratory fume cupboards with recirculation are used for the containment and removal of chemicals, vapours, and aerosols and provide the highest level of personal protection. The fume cupboard is equipped with a microprocessor-controlled monitoring system to check airflow, pre-filter, and filter efficiency. Audible and visual alarms warn of low/high airflow, black-out, filter saturation, pre-filter clogging, as well as fan and anemometer failure.