New strangeness results from HADES

New results concerning the production of K + , K ― , φ, K 0 S and A particles in the reaction Ar + KCl at 1.76 AGeV measured by the HADES Collaboration are presented. Transverse momentum distributions have been measured in several rapidity slices for all the particles mentioned above in a large fraction of the phase space. For the first time, at SIS energy, K + , K ― and φ have been measured independently and the slope parameter for φ could be extracted. A large statistics has been collected for the produced K 0 S and A in the phase space region around mid-rapity. The high quality of these data render them very suitable for comparisons with theoretical models.