composite sample

composite sample

[kəm′päz·ət ′sam·pəl]
(analytical chemistry)
A sample comprising two or more increments selected to represent the material being analyzed.

composite sample

A sample of material which is obtained by blending two or more individual samples.
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In 1968, a composite sample of 4 HQ drill holes weighing 2,800 kg (6,200 lbs) representing 206m (676 feet^ of drill core was drilled for metallurgical testing purposes and assayed 0.
The amorphous phase of PANI was changed into crystalline with the increasing concentration of PEO in each composite sample.
The composite sample is usually produced using flow- or volume-weighted sampling [19], which allows determination of the EMC for the constituent(s) of interest.
So, for example, if a charge has a true mean retention near the specification level, but has large underlying variation, then a future composite sample from that charge has a greater chance of being below the specification than if the charge has smaller underlying variation.
The degradation pattern for composite sample in Fig.
5 mm thick steel tabs were adhered on each composite sample of 140 mm/ 6 mm/3.
There is 5 percent or less clay in the composite sample.
In order to obtain electromagnetic property of the powder sample, it is necessary to manufacture composite sample which is made up of two dielectrics, and one of them is a known sample.
Its sole objective is to collect and store a representative composite sample at line conditions, allowing it to be transported to the laboratory for complete analysis.
Statistical Analysis of data: To examine differences between trial sites (C), species (S), periods (P), and the interaction SxP, a split plot design was used, with S as the main plot with four levels (1= composite sample, 2= P.
Therefore, the sample sent for analysis should be a composite sample of material collected from several locations and depths within the windrow or pile.
If a composite sample from a single meal weighed < 50 g, it was combined with food items from one or more additional meals to achieve a combined weight > 50 g.

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