75 Hard Silver Paste Solder #75 hard silver paste solder supplied in a syringe of 1/2 troy oz. This solder has a flow point of 1450ŒÁF (788ŒÁC) and a melting point of 1365ŒÁF (740ŒÁC). This Krohn syringe solder comes pre-mixed with flux. The syringe makes it ideal for fine jewellery repairs such as fine chains. This solder is Cadmium and Indium Free!