65 Medium Silver Paste Solder #65 medium silver paste solder supplied in a syringe of 1/2 troy oz. This solder has a flow point of 1325 degrees Fahrenheit (718 degrees Celsius) and a melting point of 1240 degrees Fahrenheit (671 degrees Celsius). 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!