How many total degrees does the Space Needle rotate every 47 minutes ?
However cotton wool ( with the risk of cotton fever ) or tampons can be used , although to be more effective , several filtrations should be performed ; cigarette filters should not be used due to the risk of fibres breaking off and being injected along with the solution , nor should filters of any sort ever be re-used , either as filters or in an attempt to recover drug material present , due to many risks , ranging from cotton fever to life - threatening sepsis .