Adflo breathing apparatus with self-adjusting length breathing tube (QRS), breathing tube adapter, air flow indicator, spark arrestor, pre-filter, particle filter, standard battery. With the appropriate filter, it provides effective protection against both particles and gases. The lightweight Li-ion battery charges in 4.5 hours and operates for 7-9 hours with a new particle filter and a fully charged new standard battery. The air flow is continuously 170 l/min. For hot, humid tasks, the airflow can be increased to 200 l/min by simply pressing the ON button a second time.