MRC:
The values/s/ of the element,compound,or mixture of which the composition is fabricated,excluding impurities.BBRC
Composition And Percentage:
90.00 by volume tin and 93.00 by volume tin and 3.50 by volume antimony and 5.00 by volume antimony and 3.50 by volume copper and 5.00 by volume copper
MRC:
Limitations placed on specific impurities to make the item suitable for particular uses,expressed in percent.BBRF
Impurities Limitation In Percent:
Aluminum 0.005 max, arsenic 0.10 max, iron 0.08 max, lead 0.50 max, zinc 0.005 max, other elements 0.10 max