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CHAPTER 78
LEAD AND ARTICLES THEREOF
XV
78-1
Subheading Note
1.  In this chapter the expression "refined lead" means:Metal containing by weight at least 99.9 percent of lead, provided that the content by weight of any other element does not exceed the limit specified in the following table:
TABLE - Other elements
Element Limiting content percent by weight
Ag Silver 0.02
As Arsenic 0.005
Bi Bismuth 0.05
Ca Calcium 0.002
Cd Cadmium 0.002
Cu Copper 0.08
Fe Iron 0.002
S Sulfur 0.002
Sb Antimony 0.005
Sn Tin 0.005
Zn Zinc 0.002
Other (for example Te), each 0.001
Statistical Note
1.  For the purposes of this chapter, "alloys of lead" are metals in which the lead content is, by weight, less than 99 percent, but not less than any other metallic element.

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TABLE - Other elements
Element	Limiting content percent by weight
Ag	Silver	0.02
As	Arsenic	0.005
Bi	Bismuth	0.05
Ca	Calcium	0.002
Cd	Cadmium	0.002
Cu	Copper	0.08
Fe	Iron	0.002
S	Sulfur	0.002
Sb	Antimony	0.005
Sn	Tin	0.005
Zn	Zinc	0.002
Other	(for example Te), each	0.001