along with any impurities that might result therefrom and excludes other ingredients steps numerical values in the specification and claims of this application should be understood to include numerical values which are the same when reduced to the same number of significant figures and numerical values which differ from the stated value by less than the experimental error of conventional measurement technique of the type described in the present application to determine the value all ranges disclosed herein are inclusive of the recited endpoint and independently combinable for example the range of u201c from 2 grams to 10 grams u201d is inclusive of the endpoints 2 grams and 10 grams and all the intermediate values a value modified by a term or terms such as u201c about u201d and u201c substantially u201d may not be limited to the precise value specified the modifier u201c about u201d should also be considered as disclosing the range defined by the absolute values of the two endpoints for example the expression u201c from about 2 to about 4 u201d also discloses the range u201c from 2 to 4 u201d as used in the specification and claims the term u201c metal u201d refers to a relatively pure elemental metal i e a metal containing a single element and impurities or.