A sample which is made by combining samples from two or more locations. The sample can be of water, soil or another medium.

Combined primary samples, or combined replicate samples, or combined samples from replicate trials.

A series of water samples taken over a given period of time and weighted by flow rate.

chemistry - a combined sample containing subsamples collected from different locations, depths, or times

A series of water samples taken over a given period of time and weighted by flow rate.

A series of water samples taken over a given period of time and weighted by flow rate.

A series of water samples taken over a given period of time and weighted by flow rate.

To have significant meaning, samples for laboratory tests on wastewater should be representative of the wastewater. The best method of sampling is proportional composite sampling over several hours during the day. Composite samples are collected because the flow and characteristics of the wastewater are continually changing. A composite sample will [..]

A composite sample is a collection of individual samples obtained at regular intervals, usually every one or two hours during a 24-hour time span. Each individual sample is combined with the others in [..]

A composite sample is a mixture of spot samples taken at different times, or places, from a larger mass of the same material. It is produced by thoroughly mixing the combined spot samples and, if necessary, sub-diving the quantity of the resulting mixture, using approved techniques.

a sample composed of two or more portions collected at specific times and added together in volumes related to the flow at time of collection. Compare grab sample

A non-discrete sample composed of more than one specific aliquot collected at various sampling points or times.

A composite sample is a collection of individual samples obtained at regular intervals, usually every one or two hours during a 24-hour time span. Each individual sample is combined with the others in proportion to the rate of flow when the sample was collected. The resulting mixture (composite sample) forms a representative sample and is analysed [..]