I have found plenty of information stating that if SKIN is cleansed prior to injection or cannulation, then it should be cleansed for 30 sconds and left to dry for 30 seconds (this is also stated in the Royal Marsden), so I have obviously assumed that it is the same for anything that is cleansed prior to use. I suppose it is also down to local policies, I just wondered if anyone else was using the same technique as myself.