Terminologies Flashcards
a definite quantity of materials, processed or product under conditions which are presumed uniform.
LOT
the quantity of material extracted from the lot by a single operation
INCREMENT
a part of the lot, usually the sum of several increments, assumed to be representative of the whole
SAMPLE
a representative portion of the sample, of convenient mass, delivered to the laboratory
SUB-SAMPLE
the ultimate sample of the series, subjected as a whole, to the analytical procedure
ANALYSIS SAMPLE
the size(μm) of each discreet unit of the material
PARTICLE SIZE
the process by which the increments are taken, manually or automatically at regular intervals
CONTINUOUS SAMPLING
a non-continuous process in which increments are taken at irregular intervals
INTERMITTENT SAMPLING
procedure in which the same number of increments are transferred in turn of different containers
REPLICATE SAMPLING
the difference between the experimental results and the true values
SAMPLING ERROR
an error leading to results which are sometimes higher and sometimes lower than the true values
RANDOM ERROR
an error leading to results which are consistently higher or lower than the true value
SYSTEMATIC ERROR
