A sample which is taken from a wastestream on a one-time basis without consideration of the flow rate of the wastestream and without consideration of time.
One or more pieces of rock collected at random locations of a mineralized zone that, when analyzed, do not represent a particular width nor necessarily the true mineral concentration.
A single sample of soil or of water taken without regard to time or flow.
A grab sample is sometimes called an individual or discrete sample and will only represent conditions at the exact moment it is collected. A grab sample can indicate what is in a batch dump, and a series of grab samples can show the changes that occur in an effluent over a period of time. A grab sample may spot an extreme condition that may be masked by another method.
A single sample of water collected at a particular time and place which represents the composition of the water only at that time and place.
a single sample or measurement taken at a specific time or over as short a period as feasible
a single water or wastewater sample taken at a single point in time and location
An individual sample taken at a specific location and at a specific time.
A discrete aliquot that is representative of one specific sample site location at a specific point in time.
A single sample taken directly from the material being sampled, sub sample or a portion of a composite sample.
A single water or wastewater sample taken at a time and place representative of total discharge.
A single sample taken randomly.
a sample of selected rock chips collected from within a restricted area of interest
Refers to samples of outcrop that are taken at the early stages of exploration. May represent only a few highly concentrated samples based upon visual indications and not the ore body as a whole.
A discrete water sample collected at a particular time and place. A grab sample is most often collected manually with appropriate sampling equipment.
A sample from a rock outcrop that is assayed to determine if valuable elements are contained in the rock. A grab sample is not intended to be representative of the deposit, and usually the best-looking material is selected.
A rock sample that is nominally representative but in practice may be very select. Results are most often indicative of base and/or precious metal mineralization but not likely to be representative of the overall grade.
A sample taken at random to determine if valuable elements are contained in the rock.
A sample which is taken within a very short time period. The sample is taken to determine the constituents at a specific time.
A water quality sample taken at random.
Frequent samples done periodically for purposes of testing material or water.
A single sample collected at a particular time and place that represents the composition of the water, air, or soil only at that time and place.
A single sample of material collected at one place and one time.