Question: dear tutor sterilization notes mouth mirror must be precleaned eitherplaced...

Dear tutor:

Sterilization Notes: Mouth Mirror must be precleaned ,either,placed in a sterilizing pouch with an internal process indicator,sealed ,then sterilized  or wrapped with an internal process indicator inside and secured on the outside with process indicator  tape,then sterilized . verity appropriate color change has been achieved in external process indicator immediately after removal from sterilizer then check internal process indicator before treatment.

The questions are :what is "an internal process indicator inside" and 

 what is "secured on the outside with process indicator  tape"  ,how to comprehend " color change has been achieved "  ,and what mean "in external process indicator"

 

Best regards

Vicky