Resumen
In ISO 13909-7:2016, formulae are developed which link the variables that contribute to overall sampling precision. Methods are described for estimating overall precision and for deriving values for primary increment variance which can be used to modify the sampling scheme to change the precision. Methods for checking the variance of sample preparation and testing are also described.
Informaciones generales
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Estado: PublicadoFecha de publicación: 2016-07Etapa: Norma Internacional para revisar [90.92]
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Edición: 2Número de páginas: 43
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Comité Técnico :ISO/TC 27/SC 4
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Próxima versión en desarrollo
ISO/DIS 13909-7
Coal and coke — Mechanical sampling
Part 7: Methods for determining the precision of sampling, sample preparation and testing
Ciclo de vida
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Anteriormente
RetiradaISO 13909-7:2001
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Ahora
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Será reemplazada por
En desarrolloISO/DIS 13909-7