Spray Drying (SD)

Not all spray-drying is equal. Let us show you how our array of equipment employed with deep particle engineering and formulation expertise can improve your drug products.

Features of Spray Drying

  • Spray-dried dispersions – API + polymer/excipients
  • Spray-dried powders – API alone
  • Spray dry from aqueous or organic solvent systems
  • Applicable to peptides and biologics
  • CritiTech’s single pass nitrogen systems are especially advantageous for oxygen sensitive and hygroscopic compounds
  • Non-potent API (dedicated rooms, equipment, and air handling system)
  • Non-cytotoxic API (dedicated rooms, equipment, and air handling system)
  • Potent API (dedicated rooms, equipment, and air handling system) 
  • Cytotoxic API (dedicated building, equipment, and air handling system) 
  • Milligrams to hundreds of kilograms production scale
  • Fully validated cGMP equipment

Benefits of Spray Drying

  • Bioavailability enhancement of poorly soluble drugs (BCS Class II and IV)
  • Modified release rates of highly and poorly soluble compounds
  • Enables improved pharmacokinetics and multiple routes of delivery
  • Development of multiple formulations with grams of API
  • Scalable and reproducible
  • Can be utilized as a LCM tool for a reformulated and improved 2nd generation product
  • Conditions from Buchi B-290 or Mobile Minor systems can be transferred to CritiTech

CritiTech Spray Drying Systems



Nominal process gas flow40 kg/hr150 kg/hr
Water evaporation capacity1.0 L/hr14 L/hr
Maximum drying gas pressure220°C350°C
Approximate production scale0.25-10 g50-2000 g/hr
Aqueous processing
Multiple nozzle configurations
Volatile solvent compatible