The culture addition chamber primarily consists of a housing, fan, air filter, differential pressure gauge, laminar flow diffuser, tempered glass door, isolation gloves, and lighting fixtures.

The chamber operates as follows: Air is drawn through the fan at a specific pressure, passing through a primary activated carbon filter and a high-efficiency filter. The laminar flow diffuser equalizes pressure, delivering clean air vertically into the work area to maintain the required cleanliness level for the process.

The addition chamber employs a vertical unidirectional airflow pattern. Air undergoes preliminary filtration through a primary activated carbon filter. After pre-treatment, the air is subjected to secondary filtration through a high-efficiency filter under pressure supplied by a centrifugal fan, meeting cleanliness requirements. The treated air is then uniformly and continuously delivered to the critical operating zone. This creates a stable vertical unidirectional flow within the work area. The critical zones within the operating area maintain a relative positive pressure compared to the external environment. This positive pressure ensures that contaminated air from outside cannot affect the products.