01    A 2

Three protection: operator, sample and environment. Airflow system: 70% air recirculation, 30% air exhaust A2 Cabinet is suitable for working with microbiological research in the absence of volatile or toxic chemicals and radionuclide.

02    B 2

Three protection: operator, sample and environment. Airflow system: 0 % air recirculation, 100% air exhaust B2 Biological Safety Cabinet has higher class of safety protection compared with type A2.