Diffusion now takes place, with caffeine particles migrating out of the coffee beans and into the liquid GCE, but leaving everything else—like the coffee’s natural flavor characteristics—intact. After becoming saturated with caffeine, the GCE flows through proprietary carbon filters that trap only caffeine, so that the GCE may be used once again. Refreshed, caffeine-free GCE continues to flow until the coffee reaches its target of 99.9% caffeine free. Coffee then moves from processing to drying, where moisture in the coffee is converted to vapor, and removed through the air exhaust stream.
The Swiss Water® Process is paired with advanced scientific systems and controls to identify relevant variables that adapt and adjust for different types of coffees. Where the process needs to be slow, it is slow. Where temperature needs to be adjusted, it is carefully adjusted. Swiss Water’s technicians use constant data feedback on process performance to optimize each step and the overall outcome.