REVERSIBLE HYDROCOLLOID = AGAR 2M*

  1. reversible ( gel can change to paste by heating, then can change back to gel by cooling)
  2. a major component is seaweed – comes as collapsible tubes
  3. you boil it at 100° C for 10 mins then store at 65°C for 10 mins then temper at 43-46° C 5-10 mins before you take the impression
  4. agar can be stored at 65°C for 5 days before it has to be reboiled again 

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