What are contact lenses made of?
Contact lenses take silicone and water directly. Trace them back and you pass 9 made things on the way to 9 raw materials.
How contact lenses are made See it on the map
What goes straight in
From the ground: 9 raw materials
- Water goes straight in
- Silica sand through silicone
- Quartz through silicone, metallurgical silicon
- Coal through silicone, metallurgical silicon
- Timber through silicone, metallurgical silicon
- Natural gas through silicone, methanol
- Rock salt through silicone, hydrochloric acid, chlorine
- Sulfur through silicone, hydrochloric acid, chlorine, sulfuric acid
- Air through silicone, hydrochloric acid, chlorine, sulfuric acid