The materials used for this study were potassium dihydrogen phosphate (Aladdin, Shanghai, China),
acetonitrile (Thermo Fisher, Waltham, MA, USA),
Combivent® (an inhalation solution of 2.5 mL per dose; each dose contains 0.500 mg Ipratropium bromide and 3.000 mg Salbutamol sulfate; Boehringer Ingelheim, Ingelheim am Rhein, Germany),
Pulmicort® (an inhalation suspension of 2 mL per dose, with each dose containing 1 mg
Budesonide; AstraZeneca, Cambridge, UK), Fluimucil
® (an inhalation solution of 3 mL per dose, with each dose containing 0.3 g
N-acetylcysteine; Zambon, Bresso, Italy), and Clenil
® (an inhalation solution of 2 mL per dose, with each dose containing 0.8 mg Beclomethasone; Chiesi Farmaceutici, Parma, Italy). The instruments used for the current study were a nebulizer (BOY N, LC Sprint, PARI GmbH, Starnberg, Germany), respiratory simulator (BRS 2000, Copley Scientific Company, Nottingham, UK), next-generation impactor (NGI, Copley Scientific Company, Nottingham, UK), NGI pump (LCP5, Copley Scientific Company, Nottingham, UK), laser diffraction particle size analyzer (Sympatec, Clausthal-Zellerfeld, Germany), high-performance liquid chromatograph (HPLC, e2695-2489, waters), ssmometer (Model 5600, Norwood, MA, USA), and pH meter (LAQUAtwin, Kyoto, Japan).
Zhang R., Hu J., Deng L., Li S., Chen X., Liu F., Wang S., Mohammed Abdul K.S., Beng H, & Tan W. (2020). Aerosol Characteristics and Physico-Chemical Compatibility of Combivent® (Containing Salbutamol and Ipratropium Bromide) Mixed with Three Other Inhalants: Budesonide, Beclomethasone or N-Acetylcysteine. Pharmaceutics, 12(1), 78.