He will be free to play against Geelong after confirmation he had no case to answer for the altercation in the third quarter of Port Adelaide's 18-point loss on Sunday.
The AFL Match Review Panel found the force used by Hartlett in the incident was below that required to constititute a report.
The MRP took no further action from the review, saying Hartlett had been penalised at the time when the officiating field umpire awarded a free kick against him.
PTV: Watch MRP chairman Mark Fraser's review of the incident along with others from the weekend
A statement from the AFL said:
"Contact between Port Adelaide’s Hamish Hartlett and Carlton’s Marc Murphy from the third quarter of Sunday’s match was assessed.
A free kick was paid at the time for the prohibited contact to the Carlton player.
After viewing all available footage and receiving a medical report from the Carlton Football Club, it was the view of the panel the force used was below that required to constitute a reportable offence.
No further action was taken."
