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§15.21 — Tolerances for ingredients

Tolerances for each ingredient in an explosive, which are expressed as a percentage of the total explosive, shall not exceed the following:

 
(a)
Physical sensitizers: The tolerances established by the applicant;
 
(b)
Aluminum: ±0.7 percent;
 
(c)
Carbonaceous materials: ±3 percent; and
 
(d)
Moisture and ingredients other than specified in paragraphs (a), (b), and (c) of this section: The tolerances specified in Table II.

Table II — Tolerances for Moisture and Other Ingredients

Quantity of ingredients (as percent of total explosive or sheath)Tolerance percent
0 to 5.01.2
5.1 to 10.01.5
10.1 to 20.01.7
20.1 to 30.02.0
30.1 to 40.02.3
40.1 to 50.02.5
50.1 to 55.02.8
55.1 to 100.03.0

   Reason: