Identification of the polymorphic form of an Active Pharmaceutical Ingredient (API) is of critical importance when dealing with API’s prone to changing crystal structure during the life cycle of the pharmaceutical product. 

The Food and Drug Administration (FDA) requires that the crystal form of the API in any pharmaceutical product is known and that changes during manufacturing be understood and documented. Exova offers services for polymorph identification, as well as method development and validation for products in the form of creams, suspension, and solid dosages.

 Our techniques for polymorphism and crystal identification include:

  • X-Ray Powder Diffraction (XRPD) spectroscopy
  • Raman spectroscopy
  • Differential Scanning Calorimetry (DSC), enthalpy of melting
  • Fourier Transform Infrared (Micro-FTIR) Spectroscopy
  • Scanning Electron Microscopy (SEM) and Light Microscopy (LM) for morphology
  • Image analysis software.

When the API is present at low levels, or there is crystallographic interference from the excipients, our team of chemists can develop methods to isolate the API from your product without changing the crystal structure.

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Pharmaceutical testing facilities

2395 Speakman Dr.,
Mississauga, ON L5K 1B3

Contact: Ben Vanasse - General Manager
Tel: +1 905 822 4111 (Ext: 10601)

Fax: +1 905 823 1446


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1300 First State Blvd, Suite C,
Wilmington, DE 19804

Contact: Waheed Sheikh - President
Tel: +1 302-636-0202

Fax: +1 302-636-0204


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9240 Santa Fe Springs Road,
Santa Fe Springs, CA 90670

Contact: Eric Lindsay - General Manager
Tel: +1 562-948-2225

Fax: +1 562-948-5850


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