Composite samples definition

Composite samples means a sample composed of four or more discrete aliquots (samples). The aggregate sample will reflect the average quality of the water or wastewater in the compositing or sample period. Composite sample may be composed of constant volume aliquots collected at regular intervals (simple composite) or flow proportioned.
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Composite samples. - means those samples that are made up of a series of small individual samples obtained at regular intervals over the entire discharge day. Composite samples may be time proportioned or flow proportioned, and shall be determined by PVSC.
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Composite samples means, for flow rate measurements, the arithmetic mean of no fewer than 4 individual measurements taken at equal intervals for one hour or for the duration of discharge, whichever is shorter. A 4-hour composite sample means, for other than flow rate measurements, a combination of four (4) individual portions obtained at equal time intervals over any 4-hour period or for the duration of the discharge, whichever is shorter. The volume of each individual portion shall be directly proportional to the discharge flow rate at the time of sampling. The sampling period shall coincide with the period of maximum discharge flow.
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Examples of Composite samples in a sentence

  • Composite samples comprise a standardised 1 min sample including sampling of all habitats proportional to their availability within each sampling site.


More Definitions of Composite samples

Composite samples means a combination of individual samples of Wastewater taken at selected intervals, in time or volume, to minimize the variability of the individual sample.
Sample 1Sample 2
Composite samples means a sample composed of two or more discrete aliquots (samples). The aggregate sample will reflect the average quality of the water or wastewater in the compositing or sample period. Composite sample may
Sample 1Sample 2
Composite samples means samples that are made up of a number of laboratory grab samples from a single sample container that have been thoroughly mixed together;
Sample 1
Composite samples means those samples that are made up of a series of small
Sample 1

Related to Composite samples

  • Composite sample means a combination of individual samples of wastewater taken at 1 hour intervals, for eight (8) hours (or for the duration of discharge, whichever is less), to minimize the effect of variability of the individual samples. Individual samples must be of equal volume. (Example: one (1) liter per hour.)

  • composite supply means a supply made by a taxable person to a recipient consisting of two or more taxable supplies of goods or services or both, or any combination thereof, which are naturally bundled and supplied in conjunction with each other in the ordinary course of business, one of which is a principal supply;

  • Sampler means a person who is employed by or is an owner of a licensed laboratory, grower, or processor and is authorized by that employer to collect samples in accordance with the testing laboratory's standard operating procedures and these Rules.

  • Bottle means any vessel intended to contain liquids and having a capacity of not more than 43

  • Reference biological product means the single biological product licensed pursuant to 42 U.S.C.

  • Inert ingredient means an ingredient which is not an active ingredient.

  • embedded generator means a generator who is not a market participant and whose generation facility is connected to a distribution system of a distributor, but does not include a generator who consumes more electricity than it generates;

  • Substrate means the surface onto which a coating is applied or into which a coating is impregnated.