Particle bounce and re-entrainment can compromise the accuracy of Aerodynamic Particle Size Distribution (APSD) measurements in cascade impactors like the NGI or ACI for Orally Inhaled and Nasal Drug Products (OINDPs). This occurs when particles bounce back into the airflow, leading to an overestimation of the Fine Particle Dose (FPD).
The NGI Cup Coater mitigates this issue by applying a tacky coating (e.g., glycerol or silicone oil) to collection surfaces, ensuring better particle adhesion. This reduces bounce and enhances data accuracy, particularly for dry powder inhalers (DPIs) and metered-dose inhalers (MDIs). By standardizing the coating process, the NGI Cup Coater improves reproducibility, making it essential for precise inhaler testing.
Products
NGI Cup Coater 0001-01-5920