Common equipment used in the Active Pharmaceutical Ingredients (API) industry:
1. Reactor: Used for chemical reactions to synthesize APIs.
2. Centrifuge: Separates solid particles from liquid in a suspension.
3. Dryer: Removes moisture from APIs or intermediate products.
4. Blender: Used for blending different components to form a homogenous mixture.
5. Crystallizer (Reactor): Used to precipitate solid crystals from a solution.
6. Distillation Column: Separates components based on differences in boiling points.
7. Filtration System: Removes solid impurities from liquids.
8. Chromatography System: Separates and analyzes complex mixtures.
9. Milling Machine: Reduces particle size of APIs or intermediates.
10. Packaging Machine: Packages finished API products into containers.
11. Sterilization Equipment: Ensures sterility of APIs or equipment.
12. pH Meter: Measures acidity or alkalinity of solutions.
13. Spectrophotometer: Analyzes chemical compounds based on their absorption of light.
14. Mass Spectrometer: Identifies and quantifies molecules based on their mass.
15. HPLC (High-Performance Liquid Chromatography): Separates, identifies, and quantifies components in a liquid mixture.
16. NMR (Nuclear Magnetic Resonance) Spectrometer: Determines the molecular structure of compounds.

These are some of the key equipment used in the API industry, and their selection depends on the specific processes and requirements of the manufacturing facility.
1. Reactors: 
   - Continuous flow reactors
   - Jacketed reactors
2. Centrifuges: 
      - Basket centrifuges
     - Peeler centrifuges
3. Dryers: 
   - Fluid bed dryers
   - Tray dryers
   - Vacuum dryers
   - Rotocone Vacuum Dryer
   - Rotary Vacuum Paddle Dryer
4. Mills : 
   - Multi mills
   - Cad mills
   - Jet mills
5. Filters: 
   - Neutsche filters
   - Sparkler filters
   - Filter presses
   - Leaf Filter
   -  Bag Filter
6. Blenders: 
   - Ribbon blenders
   - Octagonal Blender 
7. Distillation Equipment: 
   - Fractional distillation columns
   - Short path distillation systems
8. Crystallizers: 
   - Batch crystallizers
   - Continuous crystallizers
   - Cooling crystallizers
9. Extraction Equipment: 
   - Solvent extraction units
   - Soxhlet extractors
10. Chromatography Systems: 
    - Liquid chromatography systems
    - Gas chromatography systems
11. Filtration Systems: 
    - Membrane filtration systems
    - Ultrafiltration systems
12. Laboratory Equipment: 
    - Spectrophotometers
    - HPLC (High Performance Liquid Chromatography) systems
    - GC (Gas Chromatography) systems
    - Mass spectrometers
    - Nuclear magnetic resonance (NMR) spectrometers
     - XRPD
     - IR
      - Melting Range
13. Safety Equipment: 
    - Fume hoods
    - Safety showers
    - Personal protective equipment (PPE)
    - Water Hydrant System

These are some of the key equipment used in the API industry, but the specific equipment required can vary depending on the type of API being produced and the manufacturing process employed by each pharmaceutical company.