Formulations of Tracers

The chief requirement of a tracer is that it should be clearly visible under field conditions. For this purpose, a red color has most often been chosen since it is most visible during the day and night under all conditions. The duration of the tracer depends on the tactical use of the ammunition with which it is used. 

Tracer formulation is basically a mixture of an oxidizer and a metal fuel together with other additives, included to modify the burning rate, color, radiant output, mechanical integrity and sensitivity. Since tracer formulations are relatively difficult to ignite, a more readily ignitable formulation is pressed on the top of the tracer formulation. 

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