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The process of freeze drying (lyophilization for the hi-tech crowd)
involves harvesting the plants at their peak. They are then washed in fresh spring water and
sprayed clean.The cleaned plants are immediately frozen to provide for the necessary
conditions for low temperature drying. The plants are then placed under a vacuum. This enables
the frozen water in the herb to vaporize without passing through the liquid stage, a process
known as sublimination. Low temperature condenser plates remove the vaporized water from the
vacuum chamber by converting it back to a solid. This completes the separation process. |
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