Rules
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subheading notes
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1.
1.- In this Chapter the expression “refined lead” means: Metal containing by weight at least 99.9% 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
Limiting content% by weight
Element
0.02
Ag
Silver
0.005
As
Arsenic
0.05
Bi
Bismuth
0.002
Ca
Calcium
0.002
Cd
Cadmium
0.08
Cu
Copper
0.002
Fe
Iron
0.002
S
Sulphur
0.005
Sb
Antimony
0.005
Sn
Tin
0.002
Zn
Zinc
0.001
Other (for example Te), each
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