The Cryogenic Qualification Model (CQM) of the Planck satellite is beeing tested at the CSL (Centre Spatial de Liège). On Monday 26 September, HFI goes down to 100/101 mK on the cold end of the dilution cooler, in the CQM S/C configuration, at CSL plants, in Focal 5 vacuum chamber. The bolometer plate reaches 107 mK. It was achieved during a second cool down, after 3 weeks of investigations or/and instrument test phases involving only the 4K and 1.6K stages.