Instructions for additional equipment related to refrigeration units such as CA, MA and humidity controllers.
  • CA is short for Controlled Atmosphere.  It is an auxiliary facility that controls the levels of CO2 and O2 in the container.  The container should be airtight and have a nitrogen generator and source of carbon dioxide (such as a carbon dioxide compressed air bottle or scrubber). In both cases, the oxygen content is controlled by ventilation.
  • MA stands for Modified Atmosphere.  This means that the container has an interface into which the mixed gas is injected before shipping.  During transport, the air composition in the container is no longer controlled.
  • Humidifier can use a water source or condensate from an evaporator to humidify the circulating air. Dehumidification can be achieved by evaporative heating devices or chemical reactions. The humidity inside the chamber can only be adequately controlled if both dehumidification and humidification are available.
Refrigerated container
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