If your needs exceed the one ounce capacity, you can expand your SuperC™. The Expansion Rack for the SuperC™ increases per-run capacity from one ounce to four ounces. This solution allows existing users to upgrade their SuperC™ without replacing the entire system. This modular expansion is a great solution for the small batch or boutique production of essential oils. The Rack is offered as a special order product, and all Rack sales are final. For this reason, we recommend the purchase of a basic SuperC first, so that you can have a couple of successful runs and be sure it will meet your needs. All of OCO Labs' upgrades will retrofit to the base model SuperC™, so you will never need to buy a new system if you choose to upgrade in the future.