Contamac’s basic F2 GP range uses fluorosilicone acrylate to improve wettability and deposit resistance. Its excellent machining properties make it ideal for thin lens designs, routine spherical fits, some sophisticated designs, as well as fitting set lenses. With a range of Dk values, all sharing the same chemistry, the F2 range promises both fitting-comfort and predictability.


F2 technical information

Please Note: Regulatory requirements and standards vary from country to country, and are constantly evolving. As a global company, we want to be sure we provide you with detailed technical information, specific to your market, where appropriate, rather than using the condensed and simplified technical information on the website. If you need to use technical data for quality paperwork, or for a regulatory submission, please contact your account manager to obtain this precise and detailed information to support your regulatory requirements, we will be happy to help. 

Material characteristics 

PropertyF2 LowF2 MidF2 High
ClassificationFocon lll 2Focon lll 3Focon lll 4
Oxygen permeability (ISO) @ 35°C (barrers) 113342
Refractive index1.461.451.44
Hardness (Shore D)838281
Wetting angle (captive bubble method)191921

Please note: These are typical values. Always check the certificate of conformity supplied with the goods for the actual values of the batch.

Manufacturing consumables

  • Low melt wax
  • Water soluble wax
  • Contapol 3 polishing compound 
  • Microfiber polishing cloth
  • Silk polishing cloth
  • Delrin polishing cups
  • Delrin polishing sponge
  • Delrin drum polishing sponge
  • Contasolve de-blocking solution
  • Roller sponges


  • Laboratory lens handler
  • Double soft lens mailers
  • RGP double mailers
  • Large RGP double mailers
  • Plastic tamper evident RGP vial
  • Double opticase plastic RGP vial
  • Lens remover
  • DMV RGP lens remover
  • Lens catch mat

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