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We offer the test for photostability

In addition to our comprehensive services regarding stability testing and storage, we offer the test for photostability according to guideline ICH Q1B "Stability Testing: Photostability Testing of New Drug Substances and Products".

Equipment, Methods, Procedures


  • Temperature and Moisture-Regulated Photostability Cabinet
  • The Endpoint Detection is Performed with Calibrated Sensors

We analyze

  • Drugs 
  • Finished Pharmaceutical Preparations 
  • Primary Packed Products 
  • Cosmetics 


  • Analysis of the Unexposed and the Exposed Sample 
  • Analysis of Reference Samples 
  • Determination the Physical Properties 
  • Assay 
  • Detection and Analysis of Degradation Products 
  • Dissolution 

The light intensity and temperature during the tests are measured on the surface of the sample. 


  • UV (300-400 nm): At least 100 Wh/m² 
  • VIS (400-800 nm): At least 1.2 million lx 
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