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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References in periodicals archive ?
A composite sample of heavy minerals was consigned for mineral products sighter test-work to Allied Mineral Laboratories in Perth.
the surface run off water is monitored monthly with a composite sample. type of contract: supplies
The second one was used for the composite sample, with equal aliquots of milk from each milking session (Experiment 1=13.3 mL; Experiment 2=20 mL) which were then mixed in a single sample for analysis; and the third one was used for the proportional sample, that is the volume of the sample in a milking session was proportional to the milk total volume yielded in each session, and then the samples were mixed in a single sample for analysis.
To test the composite sampling technique, 25 plants from each block were selected at random and a small sample of roots and soil from each container was combined into a single composite sample. Phytophthora was identified from each composite sample following standard techniques (outlined above), and then the detection rate was determined.
Make a composite sample from a few areas in the bed and send in for testing.
In this study, the physical geometry refers to the height percentage ([h.sub.r]) of the coal component in a composite sample.
The smaller particle size of CNTs reduces the amount of porosity and dislocations which make the CNTgraphene composite sample more uniform as compared to the pure graphene-based sensor (see Section 3.2).
Staff at the Wildlife Habitat and Nutrition Laboratory, Washington State University, Pullman, Washington, oven-dried (70[degrees]C) and ground (1-mm size) each composite before preparing 4 slides from each composite and examining 25 views per slide for a total of 100 views per composite sample. They identified each forage class (such as shrubs, forbs, grasses, sedge-rushes, and conifers) and all plants >5% of the diet to at least the genus level using epidermal-cell-tissue fragments.
Composite sample of 5 mg were suspended in an [Al.sub.2][O.sub.3] pan at the heating rate of 10[degrees]C/min in nitrogen atmosphere to evaluate the thermal stability of the composite material.
Hysteresis curves taken at different temperatures as a function of magnetic field for each composite sample: a) 300K, b) 120K c) 50K
The connected porosity of composite sample was nonacoustically measured using the method of water saturation used by Vasina et al.
A private food testing laboratory tested a frozen mixture of beef and beans, nacho cheese sauce, tortilla chips, and Spanish rice (composite sample) for bacterial toxins and peroxide levels.

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