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? The service life of soldering flux varies slightly due to process conditions. When the flux is not in working condition, it should be kept in a sealed container as much as possible to avoid solvent evaporation.
? When it is necessary to replace expired flux, the flux container should be thoroughly cleaned before replacing with a new flux.
? Pre heating after application of flux can fully leverage the advantages of Unibright 704 lead-free water-soluble flux. It is recommended that the preheating temperature should reach 100-150 ℃ on the PCB board or component welding surface after preheating.
? Using hot water at 50-60 ℃ combined with spray/ultrasonic cleaning can achieve the minimum ion residue without the need for any cleaning agent.