BS/EN 14243-1-2019 pdf download.Materials obtained from end of life tyres
Part 1: General definitions related to the methods for determining their dimension(s) and impurities.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Sampling and sample preparation
3.1.1
sample
portion of material selected from a larger quantity of material
[SOURCE: IUPAC definitioni
3.1.2
sub-sample
portion of a sample
3.1.3
increment
sub-portion of material extracted in a single operation by the sampling device
[SOURCE: 150 139094:2016, 3.15, modifiedj
3.1.4
characteristic
property which helps to identify or differentiate items of a given population
NOTE The characteristic may be either quantitative (by variables) or qualitative (by attributes).
3.1.5
lot
defined quantity of material for which a characteristic is to be determined
Note I to entry: In sampling standards the lot is also designated as the scale.
Note 2 to entry: The lot (or the scale) is a stated weight or volume of material that is considered appropriate for assessing a given characteristic of the material. When several characteristics are determined, the corresponding lots may not be identical.
3.1.7
field sample
sample taken in the place of production and from which laboratory samples are created
3.1.8
laboratory sample
sample or sub-sample sent to or received by the laboratory
[SOURCE: IUPAC definition]
Note I to entry: The laboratory sample is the final sample from the point of view of sample collection but it is the initial sample from the point of view of the laboratory testing and analysis.
Note 2 to entry: Several laboratory samples can be prepared and sent to different laboratories or they can be sent to the same laboratory for different purposes. In the latter case, they are generally considered a single laboratory sample and documented as such.
3.1.9
test sample
sample prepared from the laboratory sample, by subdivision, mixing, or crushing, or by a combination of these processes from which the test portions are removed for testing or for analysis
[SOURCE: IUPAC definition]
3.1.10
test portion
quantity or volume removed from the test sample for analysis purposes
(SOURCE: IUPAC definition]
3.1.11
population
totality of items, or total volume of material, to be investigated by sampling
NOTE The population will generally be a convenient, well-defined subset of the overall population (e.g. a year’s production of material) that is believed to be typical of that wider population.
3.1.12
representative sample
sample resulting from a sampling plan that can be expected to adequately reflect the properties of interest of the parent population.
(SOURCE: IUPAC definition]
NOTE This sample is expected to reflect adequately the properties of interest in the parent population.
3.L14
Judgement based sampling
sampling undertaken from a practically convenient (perhaps relatively small) sub-population, not conducted fully in accordance with the statistical principles of sampling
3.1.15
sample division
reduction of the mass of a sample or sub-sample
3.2 Materials derived from ELTs
3.2.1
end-of-life tyre (ELT)
tyre no longer suitable for its original purpose
3.2.2
cut
result of mechanical processes by which end-of-life tyres are fragmented, ripped or torn into irregularly formed pieces typically larger than 300 mm in size
3.2.3
shred
result of mechanical processes by which end-of-life tyres are fragmented, ripped or torn into irregular pieces of typically 20 mm to 400 mm in any dimension
3.2.4
format
range of shreds size based on the distribution of the maximum projected length of shreds produced from end-of-life tyres
3.2.5
chip
result of mechanical processes by which end-of-life tyres are fragmented, ripped or torn into irregularly shaped pieces of typically 10 mm to 50 mm in size
3.2.6
granulate
ELT derived rubber particles typically between 0,8 mm and 20 mm obtained from a granulation process
3.2.7
powder
ELT derived rubber particles typically less than 0,8 mm obtained from a granulation process.BS/EN 14243-1-2019 pdf download.