West Lyo stoppers on Lyophilized vials

Pharmaceutical Rubber Stoppers

West stoppers protect drugs from environmental impact and help maintain quality and safety. 

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Analytical Services
With a wealth of knowledge and experience in laboratory testing and regulatory guidance’s, West's Analytical Services helps customers mitigate the risks associated with package selection for pharmaceutical, biotechnology and medical device clients.
West scientists in analytical lab







Daikyo Crystal Zenith® is a registered trademark of Daikyo Seiko, Ltd.  

Daikyo Crystal Zenith® technology is licensed from Daikyo Seiko, Ltd.

NovaPure®, FluroTec®, Westar®, Envision® and LyoTec® are registered trademarks of West Pharmaceutical Services, Inc., in the United States and other jurisdictions. 

Extractables and Leachables

West offers Extractables/Leachables analysis for packaging and delivery systems for all pharmaceutical and biological products.

Packaging and Performance

West provides standard and custom analysis for delivery system and device performance, functionality, device verification studies and package qualification.

Particle Analysis

West’s Analytical Services collaborates with customers to assist and resolve particle challenges.

Container Closure Integrity

West has an extensive portfolio of Container Closure Integrity (CCI) techniques and analysis for various packaging and delivery systems to meet the needs of pharmaceutical, biotech and medical device manufacturers.