SAMPLING Flashcards
A defined procedure whereby a part of a substance, material or product is taken
to provide for testing or calibration a representative sample of the whole. (ISO /IEC 17025)
Sampling
The process of selecting a portion of material, in some manner, to represent or provide information about a larger body of material.
Sampling
To reduce the size of the bulk material;
Sampling
To preserve information contained in the bulk material
Sampling
A portion of a material, selected in a specialized manner, which represents a larger body of material
Sample
Representative of the bulk (system)
Sample
Of reduced size that can be handled by the sampler and analyst
Sample
Retains the properties of the lot, or properties change the same way as the
lot
Sample
Suitable in amount and form to provide needed information
Sample
Forms of the lot / bulk / system
o Solid / Liquid / Gas
o Homogeneous / Heterogeneous
o Static / Dynamic
o Inorganic / Organic / Biological
Types of Sampling
o Random Sampling
o Judgmental / Selective Sampling
o Systematic Sampling
o Stratified Sampling
Sample is collected a random from the target population
(Random sample).
Random Sampling