hydrophilic materials are supplied to order
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Facts About Hydrophilic Materials
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Hydrophilic Materials

Biogel materials are copolymers of methyl methacrylate and N vinyl pyrollidone. They have been manufactured since 1974 and their stability and clinical safety are well documented in the contact lens literature. Accordingly we would advise that for CE marking both the biological compatibility, clinical safety and stability of the material can be accepted as being completely satisfactory. A shelf-life of at least five years can be claimed, subject to the packaging of the lens maintaining the sterility, and limiting any moisture loss. However even if Biogel materials were to completely dry out, upon re-hydration the original parameters would be completely restored. Please contact us for more information about contact lens materials.

AEP Products
Founded originally on the Biogel range of materials, new formulations and production methods have extended both the range of materials and the applications with the AEP hydrophilic materials range of products. These now form a diverse range of hydrophilic materials and products with a wide range of applications including wound care, encapsulation and controlled release, ultrasound media, implants, liquid containment, swelling seals, sensors and leak detection.  Please contact us for a discussion about your requirements and how these can be met.




2007 Andrews Wright Ltd.

Examples of hydrophilic types:

AEP 40
Low water absorption and swell with maximum mechanical stability and dessicant action.

AEP 50
Most used for encapsulation of other chemical materials for preservation and controlled release.

AEP 60
Most used for moulding and mechanical devices with best combination of mechanical stability and volume expansion.

AEP 80
High volume expansion and water absorption used for wound care and similar applications

Contact lens and implant materials are available in a range of water contents from 61% to 78% and with linear expansions from 1.39 to 1.67.

AEP blends
Blended formulations are made using a combination of proprietry and/or commercial materials for the manufacture of a range of products.