GM Advance
GM Advance is an evolutionary advance on the physical and chemical properties of GMA-based soft lens materials. Its refined blend of purified monomers helps achieve high manufacturing yields, while its exceptional on-eye stability, water retention and durability guarantees patient satisfaction and low lens breakage levels.
- Lower modulus, higher tensile strength and higher elongation-to-break than other GMA based materials
- Unique material blends ensure superior lens surfaces and edges
- More dimensionally-stable than other GMA-based and soft lens materials
- Resists dehydration longer and rehydrates faster than comparable materials
- Dehydration comparable to Polymacon, and better than VP/PMMA-based materials
- Available in 49% and 58% water contents
GM Advance 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
| Property | Contaflex GM Advance 49% | Contaflex GM Advance 58% |
|---|---|---|
| Classification | Filcon l 2 | Filcon ll 2 |
| USAN | Acofilcon B | Acofilcon A |
| Oxygen permeability (ISO) @ 35°C gas to gas (barrers) | 16 | 26 |
| Swell factor @ 20°C | 1.28 | 1.36 |
| Water content by refractometer @ 20°C | 50% | 60% |
| Refractive index @ 20°C dry | 1.515 | 1.515 |
| Refractive index @ 20°C hydrated | 1.417 | 1.400 |
| Light transmission (%) @ 380-780nm | >94% | >94% |
| Hardness (Shore D) | 86 | 83 |
Please note: These are typical values. Always check the certificate of conformity supplied with the goods for the actual values of the batch.
Environment Control
For best manufacturing conditions Contamac recommends 19-23°C with a relative humidity of 45% - 60%
Polishing
The recommended polishing compound is Contapol 2 with a spindle speed of 3,500 rpm and weight of 240gms. With the above machining recommendations polishing should require a maximum of 30 seconds.
Hydration
Hydration of GM3 Advance materials is best performed in buffered saline with a PH of 6.8 – 7.3.
Manufacturing Consumables
- High melt blocking wax
- High melt blocking beeswax
- Kemdent blocking wax
- Water soluble wax
- Contapol 1 polishing compound
- Contapol 2 polishing compound
- Cotton polishing cloth
- Delrin polishing cup
- Delrin polishing sponge
- Roller sponges
Accessories
- Tweezers
- Glass vials
- Stoppers
- Aluminium top seals
- Flip tear up seals
- Shrink-wrap sleeves
- Double soft lens mailers
- Net vial sleeves
- DMV soft lens remover
- Lens catch mat
Related Content
Contaflex GM Advance | Technical Data
68KB PDF
Contaflex GM Advance | Brochure
1.14MB PDF