ISO/TR 7553:1987 PDF
Fertilizers — Sampling — Minimum mass of increment to be taken to be representative of the total sampling unit
Fertilizers — Sampling — Minimum mass of increment to be taken to be representative of the total sampling unit
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 25 июня 1987 г.
- Издание:
- ISO TR 7553 edition 1 version 1
- ICS:
- 65.080
The report specifies the extent of mass reduction beyond which the error in the representativity can no longer be ignored.
Abstract
Overview
ISO/TR 7553:1987 is an ISO Technical Report (type 3) that addresses fertilizer sampling and defines the required to remain representative of the total sampling unit. Published by ISO/TC 134 (Fertilizers and soil conditioners), the report complements existing fertilizer sampling plans and sample-reduction guidance by specifying how far mass reduction may proceed before representativity errors become significant.
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