Preferred Label : coning and quartering;
Detailed label : coning and quartering in analytical chemistry;
IUPAC definition : The reduction in size of a granular or powdered sample by forming a conical heap which
is spread out into a circular, flat cake. The cake is divided radially into quarters
and two opposite quarters are combined. The other two quarters are discarded. The
process is repeated as many times as necessary to obtain the quantity desired for
some final use (e.g. as the laboratory sample or as the test sample). If the process
is performed only once, coning and quartering is no more efficient than taking alternate
portions and discarding the others.;
Origin ID : C01265;
See also
The reduction in size of a granular or powdered sample by forming a conical heap which
is spread out into a circular, flat cake. The cake is divided radially into quarters
and two opposite quarters are combined. The other two quarters are discarded. The
process is repeated as many times as necessary to obtain the quantity desired for
some final use (e.g. as the laboratory sample or as the test sample). If the process
is performed only once, coning and quartering is no more efficient than taking alternate
portions and discarding the others.
