ISO 14820-1:2016 肥料と石灰材料—サンプリングとサンプル準備—パート1：サンプリング | ページ 2

Foreword

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ISO 14820-1:2016 was prepared by CEN/TC 260, Fertilizers and liming materials (as EN 1482-1:2007) and was adopted without modification other than those stipulated below by ISO/TC 134, Fertilizers and soil conditioners.

• The EN references (EN 1482-1 and EN 1482-2) have been changed to ISO references (ISO 14820-1 and ISO 14820-2).
• The definitions in 3.1, 3.4 and 3.5 have been modified slightly to align them with those in ISO 8157:2015. ISO 8157 has been added to the Bibliography.
• For consistency,"rotating sample divider" has been changed to"rotary sample divider" throughout the text. (The term"rotary" was already used in Annexes A and C in EN 1482-1:2007 and in 5.1 in EN 1482-2:2007.)
• In 4.2.2, 5.3.1, 5.6.1, 5.6.4.3.5, 5.7, 5.11.2.1 and A.3, notes have been changed to full text.
• In 5.2.3, 5.4.2, 5.6.3 and 5.7.2, the apparatus are now listed under separate subclause numbers.
• ISO 2602 has been moved from Clause 2 to the Bibliography; it is only cited after “such as” in A.5.1.

ISO 14820 consists of the following parts, under the general title Fertilizers and liming materials — Sampling and sample preparation:

• Part 1: Sampling
• Part 2: Sample preparation

Introduction

This part of ISO 14820 covers the following aspects of sampling, derived from the International Standards and documents indicated below but presented in a simplified and condensed form. The titles of these International Standards are given in the Bibliography.

• Sampling plans and quantitative data: ISO 8634, ISO/TR 5307, ISO/TR 7553 and EEC 77/535 (superseded by Regulation (EC) No 2003/2003).
• Sampling methods: ISO 3963, and EEC 77/535 (superseded by Regulation (EC) No 2003/2003).
• Reduction: ISO 7410, ISO 7742, ISO 8358 and EEC 77/535 (superseded by Regulation (EC) No 2003/2003).
• Sampling reports: ISO 5306 and EEC 77/535 (superseded by Regulation (EC) No 2003/2003).

ISO 14820-2 covers the reduction and preparation of samples for analysis.

Figure 1 gives a schematic diagram of the sampling and sample preparation process for solids.

The fundamental principle of representative sampling is that every particle has an equal chance of being selected or rejected. This principle cannot easily be complied with in the case of bulk heaps of solid fertilizers or large storage tanks of fluid fertilizers as the majority of the material cannot be reached by any sampling device. The fertilizer in these cases should be sampled during transfer, during the building up of the heap, during the filling of the storage tank, during dispatch or where it is being moved solely for sampling purposes.

1 Scope

This part of ISO 14820 specifies sampling plans and methods of representative sampling of fertilizers and liming materials to obtain samples for physical and chemical analysis, from packages and containers up to and including 1 000 kg, from fluid products and from fertilizers in bulk provided the product is in motion.

It is applicable to the sampling of lots of fertilizer or liming material supplied or ready for supply to third parties, as such, or in smaller lots, each of which would be subject to local, national or regional legislation. Where legislation so requires, samples are taken in accordance with this part of ISO 14820.

This part of ISO 14820 does not cover complete, statistical sampling plans.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

Bibliography