ilver Chromate Paper Test (J-STD-004; TM-650 #2.3.33):
This is a qualitative test in which a sample of flux is applied to Silver Chromate Paper and allowed
to remain for 1-minute. After removing the flux, if the paper changes colors then it indicates the
presence of Cl or Br.
This test only identifies the halogen in the ionic form and is prone to false positives from chemicals
such as amines, cyanides, and isocyanates. It is also provides no indication to the total halogen present.
Titration (J-STD-004; TM-650 #2.3.35):
This is a quantitative,test that assesses the total halides present in a flux as a Cl equivilant. A flux or flux extract is titrated
to its endpoint终点 following the J-STD procedure. This test method is an improvement over
Silver Chromate in that it provides a value for how much halide is present. However, it also is only
effected by ionic halides. There are also a wide variety of organic chemicals that can falsely be
identified as halides.