SIST EN ISO 14820-1:2019
(Main)Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling (ISO 14820-1:2016)
Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling (ISO 14820-1:2016)
ISO 14820-1:2016 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.
NOTE The term "fertilizer" is used throughout the body of this document and is taken to include liming materials unless otherwise indicated.
This part of ISO 14820 does not cover complete, statistical sampling plans.
Düngemittel und Kalkdünger - Probenahme und Probenvorbereitung - Teil 1: Probenahme (ISO 14820-1:2016)
Engrais et amendements minéraux basiques - Échantillonnage et préparation de l’échantillon - Partie 1: Échantillonnage (ISO 14820-1:2016)
La présente partie de l'ISO 14820 spécifie les plans et les méthodes d'échantillonnage représentatif d'engrais et d'amendements minéraux basiques pour obtenir des échantillons destinés aux analyses physiques et chimiques, à partir d'emballages et de grands récipients d'une masse jusqu'à 1000 kg inclus, à partir de produits liquides et d'engrais en vrac à condition que le produit soit en mouvement.
Le présent document s'applique aux livraisons d'engrais ou d'amendements minéraux basiques fournis à une tierce partie pour être revendus sous sa propre responsabilité, en lots plus petits, chacun étant soumis à la législation locale, nationale ou régionale en vigueur. Lorsque la législation l'exige, les échantillons sont prélevés conformément à la présente partie de l'ISO 14820.
NOTE Le terme «engrais» est utilisé tout au long de ce document et prend en compte les amendements minéraux basiques sauf indication contraire.
La présente partie de l'ISO 14820 ne couvre pas les plans d'échantillonnage complets et statistiques.
Gnojila in sredstva za apnjenje - Vzorčenje in priprava vzorcev - 1. del: Vzorčenje (ISO 14820-1:2016)
ISO 14820-1:2016 določa načrte vzorčenja in postopke reprezentativnega vzorčenja gnojil ter sredstev za apnjenje pri pridobivanju vzorcev za fizikalno in kemijsko analizo iz embalaže in posod do vključno 1000 kg, tekočih proizvodov ter gnojil v razsutem stanju, če je izdelek v gibanju.
Uporablja se za vzorčenje gnojil ali sredstev za apnjenje, ki so dobavljena oziroma pripravljena za dobavo tretjim osebam, kot takih ali v manjših sklopih, pri čemer za vsakega od sklopov velja lokalna, nacionalna ali regionalna zakonodaja. Kadar tako zahteva zakonodaja, poteka odvzem vzorcev v skladu s tem delom standarda ISO 14820.
OPOMBA: Izraz »gnojilo« se uporablja v celotnem glavnem delu tega dokumenta in vključuje tudi sredstva za apnjenje, če ni navedeno drugače.
Ta del standarda ISO 14820 ne zajema načrtov celovitega, statističnega vzorčenja.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 14820-1:2019
01-september-2019
Gnojila in sredstva za apnjenje - Vzorčenje in priprava vzorcev - 1. del: Vzorčenje
(ISO 14820-1:2016)
Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling
(ISO 14820-1:2016)
Düngemittel und Kalkdünger - Probenahme und Probenvorbereitung - Teil 1:
Probenahme (ISO 14820-1:2016)
Engrais et amendements minéraux basiques - Échantillonnage et préparation de
l’échantillon - Partie 1: Échantillonnage (ISO 14820-1:2016)
Ta slovenski standard je istoveten z: EN ISO 14820-1:2019
ICS:
65.080 Gnojila Fertilizers
SIST EN ISO 14820-1:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 14820-1:2019
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SIST EN ISO 14820-1:2019
EN ISO 14820-1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 65.080
English Version
Fertilizers and liming materials - Sampling and sample
preparation - Part 1: Sampling (ISO 14820-1:2016)
Engrais et amendements minéraux basiques - Düngemittel und Kalkdünger - Probenahme und
Échantillonnage et préparation de l'échantillon - Partie Probenvorbereitung - Teil 1: Probenahme (ISO 14820-
1: Échantillonnage (ISO 14820-1:2016) 1:2016)
This European Standard was approved by CEN on 1 April 2019.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14820-1:2019 E
worldwide for CEN national Members.
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SIST EN ISO 14820-1:2019
EN ISO 14820-1:2019 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 14820-1:2019
EN ISO 14820-1:2019 (E)
European foreword
The text of ISO 14820-1:2016 has been prepared by Technical Committee 134 "Fertilizers, soil
conditioners and beneficial substances” of the International Organization for Standardization (ISO) and
has been taken over as EN ISO 14820-1:2019 by Technical Committee CEN/TC 260 “Fertilizers and
liming materials” the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2019, and conflicting national standards
shall be withdrawn at the latest by December 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 14820-1:2016 has been approved by CEN as EN ISO 14820-1:2019 without any
modification.
3
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SIST EN ISO 14820-1:2019
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SIST EN ISO 14820-1:2019
INTERNATIONAL ISO
STANDARD 14820-1
First edition
2016-05-01
Fertilizers and liming materials —
Sampling and sample preparation —
Part 1:
Sampling
Engrais et amendements minéraux basiques — Échantillonnage et
préparation de l’échantillon —
Partie 1: Échantillonnage
Reference number
ISO 14820-1:2016(E)
©
ISO 2016
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SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sampling plans and quantitative data . 2
4.1 General . 2
4.2 Sampling plans . 3
4.2.1 Determination of the number of sampling units which form the sampled portion 3
4.2.2 Identification of the sampling units to be sampled. 4
4.2.3 Collection of increments . 4
4.3 Quantitative data . 5
4.3.1 Mass of increments . 5
4.3.2 Mass of single aggregate/reduced samples . 5
4.3.3 Mass of multiple aggregate samples . 5
4.3.4 Mass of final sample . 5
5 Incremental sampling methods . 5
5.1 General . 5
5.2 Solid fertilizer in bulk being moved by conveyor belt — Stopping the belt method . 5
5.2.1 General. 5
5.2.2 Principle . 6
5.2.3 Apparatus . 6
5.2.4 Procedure . 6
5.3 Solid fertilizer in bulk — Mechanical sampling while in motion. 6
5.3.1 General. 6
5.3.2 Procedure . 7
5.4 Solid fertilizer in bulk — Manual sampling from falling stream . 7
5.4.1 Principle . 7
5.4.2 Apparatus . 7
5.4.3 Procedure . 7
5.5 Solid fertilizer in bulk — Manual sampling method by moving the bulk . 8
5.5.1 General. 8
5.5.2 Procedure . 9
5.6 Solid fertilizers in packages — Reduction method using a rotary mechanical
sample divider . 9
5.6.1 General. 9
5.6.2 Principle . 9
5.6.3 Apparatus . 9
5.6.4 Procedure .10
5.6.5 Precautions .11
5.7 Solid fertilizers in packages — Reduction method using a riffle divider .11
5.7.1 General.11
5.7.2 Apparatus .11
5.7.3 Procedure .12
5.8 Sampling of solid fertilizers in packages — Manual method .13
5.9 Sampling from intermediate bulk containers (IBC’s) by controlled flow .14
5.9.1 General.14
5.9.2 Principle .14
5.9.3 Safety .14
5.9.4 Apparatus .15
5.9.5 Obtaining increments .17
5.9.6 Precautions .18
© ISO 2016 – All rights reserved iii
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SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
5.10 Sampling from intermediate bulk containers IBC’s - Manual method .18
5.10.1 Principle .18
5.10.2 Procedure .18
5.11 Sampling of fluid fertilizers .18
5.11.1 General.18
5.11.2 Apparatus .19
5.11.3 Procedure .19
6 Reduction of aggregate sample .21
6.1 General .21
6.2 Solid fertilizers .21
6.2.1 General.21
6.2.2 Procedure .21
6.3 Fluid fertilizers .22
6.3.1 Apparatus .22
6.3.2 Procedure .22
7 Division into final samples .22
8 Practical arrangements for final (laboratory) samples .22
8.1 Containers .22
8.2 Sealing of containers .22
8.3 Labelling of final samples .23
8.4 Dispatch of the final sample .23
8.5 Storage of final samples .23
9 Sampling report.23
9.1 General .23
9.2 Essential information .23
9.3 Additional information .24
Annex A (normative) Test for bias in mechanical samplers .25
Annex B (informative) Examples of rotary sample dividers .28
Annex C (normative) Test for bias in a rotary divider .31
Annex D (informative) Examples of apparatus for sampling fluid fertilizers .32
Annex E (normative) Methods of mixing for fluid fertilizers .40
Bibliography .47
iv © ISO 2016 – All rights reserved
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SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
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
© ISO 2016 – All rights reserved v
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SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
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.
vi © ISO 2016 – All rights reserved
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SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
Figure 1 — Schematic diagram of sampling process for solids
© ISO 2016 – All rights reserved vii
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SIST EN ISO 14820-1:2019
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SIST EN ISO 14820-1:2019
INTERNATIONAL STANDARD ISO 14820-1:2016(E)
Fertilizers and liming materials — Sampling and sample
preparation —
Part 1:
Sampling
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.
NOTE The term “fertilizer” is used throughout the body of this document and is taken to include liming
materials unless otherwise indicated.
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.
EN 1235, Solid fertilizers — Test sieving (ISO 8397:1988 modified)
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
aggregate sample
combination of all increments from the lot
Note 1 to entry: The increments may be grouped together in equal numbers in order to form several aggregate
samples which can be reduced and analysed separately for the purpose of statistical interpretation.
[SOURCE: ISO 8157:2015, 2.6.4]
3.2
delivery
quantity of material transferred at one time
3.3
division
process of producing a number of representative smaller portions, approximately equal in mass to each
other, from a larger mass
© ISO 2016 – All rights reserved 1
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SIST EN ISO 14820-1:2019
ISO 14820-1:2016(E)
3.4
final sample
representative part of the reduced sample or, where no intermediate reduction is required, of the
aggregate sample
Note 1 to entry: Often, more than one sample is prepared, at the same time, from the reduced sample (or from
the aggregate sample). One or more of these final samples will be used as a laboratory sample or as laboratory
samples, while others may be stored for reference purposes.
[SOURCE: ISO 8157:2015, 2.6.6]
3.5
increment
representative quantity of material taken from a sampling unit
Note 1 to entry: This may be constituted from a number of partial samples.
[SOURCE: ISO 8157:2015, 2.6.3]
3.6
laboratory sample
final sample intended for laboratory inspection or testing
3.7
lot
total quantity of material, assumed to have the same characteristics, to be sampled using a particular
sampling plan
3.8
reduced sample
representative part of the aggregate s
...
SLOVENSKI STANDARD
oSIST prEN ISO 14820-1:2019
01-januar-2019
*QRMLODLQVUHGVWYD]DDSQMHQMH9]RUþHQMHLQSULSUDYDY]RUFHYGHO 9]RUþHQMH
,62
Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling
(ISO 14820-1:2016)
Düngemittel und Kalkdünger - Probenahme und Probenvorbereitung - Teil 1:
Probenahme (ISO 14820-1:2016)
Engrais et amendements minéraux basiques - Échantillonnage et préparation de
l’échantillon - Partie 1: Échantillonnage (ISO 14820-1:2016)
Ta slovenski standard je istoveten z: prEN ISO 14820-1
ICS:
65.080 Gnojila Fertilizers
oSIST prEN ISO 14820-1:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 14820-1:2019
---------------------- Page: 2 ----------------------
oSIST prEN ISO 14820-1:2019
INTERNATIONAL ISO
STANDARD 14820-1
First edition
2016-05-01
Fertilizers and liming materials —
Sampling and sample preparation —
Part 1:
Sampling
Engrais et amendements minéraux basiques — Échantillonnage et
préparation de l’échantillon —
Partie 1: Échantillonnage
Reference number
ISO 14820-1:2016(E)
©
ISO 2016
---------------------- Page: 3 ----------------------
oSIST prEN ISO 14820-1:2019
ISO 14820-1:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 14820-1:2019
ISO 14820-1:2016(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Sampling plans and quantitative data . 2
4.1 General . 2
4.2 Sampling plans . 3
4.2.1 Determination of the number of sampling units which form the sampled portion 3
4.2.2 Identification of the sampling units to be sampled. 4
4.2.3 Collection of increments . 4
4.3 Quantitative data . 5
4.3.1 Mass of increments . 5
4.3.2 Mass of single aggregate/reduced samples . 5
4.3.3 Mass of multiple aggregate samples . 5
4.3.4 Mass of final sample . 5
5 Incremental sampling methods . 5
5.1 General . 5
5.2 Solid fertilizer in bulk being moved by conveyor belt — Stopping the belt method . 5
5.2.1 General. 5
5.2.2 Principle . 6
5.2.3 Apparatus . 6
5.2.4 Procedure . 6
5.3 Solid fertilizer in bulk — Mechanical sampling while in motion. 6
5.3.1 General. 6
5.3.2 Procedure . 7
5.4 Solid fertilizer in bulk — Manual sampling from falling stream . 7
5.4.1 Principle . 7
5.4.2 Apparatus . 7
5.4.3 Procedure . 7
5.5 Solid fertilizer in bulk — Manual sampling method by moving the bulk . 8
5.5.1 General. 8
5.5.2 Procedure . 9
5.6 Solid fertilizers in packages — Reduction method using a rotary mechanical
sample divider . 9
5.6.1 General. 9
5.6.2 Principle . 9
5.6.3 Apparatus . 9
5.6.4 Procedure .10
5.6.5 Precautions .11
5.7 Solid fertilizers in packages — Reduction method using a riffle divider .11
5.7.1 General.11
5.7.2 Apparatus .11
5.7.3 Procedure .12
5.8 Sampling of solid fertilizers in packages — Manual method .13
5.9 Sampling from intermediate bulk containers (IBC’s) by controlled flow .14
5.9.1 General.14
5.9.2 Principle .14
5.9.3 Safety .14
5.9.4 Apparatus .15
5.9.5 Obtaining increments .17
5.9.6 Precautions .18
© ISO 2016 – All rights reserved iii
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oSIST prEN ISO 14820-1:2019
ISO 14820-1:2016(E)
5.10 Sampling from intermediate bulk containers IBC’s - Manual method .18
5.10.1 Principle .18
5.10.2 Procedure .18
5.11 Sampling of fluid fertilizers .18
5.11.1 General.18
5.11.2 Apparatus .19
5.11.3 Procedure .19
6 Reduction of aggregate sample .21
6.1 General .21
6.2 Solid fertilizers .21
6.2.1 General.21
6.2.2 Procedure .21
6.3 Fluid fertilizers .22
6.3.1 Apparatus .22
6.3.2 Procedure .22
7 Division into final samples .22
8 Practical arrangements for final (laboratory) samples .22
8.1 Containers .22
8.2 Sealing of containers .22
8.3 Labelling of final samples .23
8.4 Dispatch of the final sample .23
8.5 Storage of final samples .23
9 Sampling report.23
9.1 General .23
9.2 Essential information .23
9.3 Additional information .24
Annex A (normative) Test for bias in mechanical samplers .25
Annex B (informative) Examples of rotary sample dividers .28
Annex C (normative) Test for bias in a rotary divider .31
Annex D (informative) Examples of apparatus for sampling fluid fertilizers .32
Annex E (normative) Methods of mixing for fluid fertilizers .40
Bibliography .47
iv © ISO 2016 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 14820-1:2019
ISO 14820-1:2016(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
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
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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.
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Figure 1 — Schematic diagram of sampling process for solids
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INTERNATIONAL STANDARD ISO 14820-1:2016(E)
Fertilizers and liming materials — Sampling and sample
preparation —
Part 1:
Sampling
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.
NOTE The term “fertilizer” is used throughout the body of this document and is taken to include liming
materials unless otherwise indicated.
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.
EN 1235, Solid fertilizers — Test sieving (ISO 8397:1988 modified)
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
aggregate sample
combination of all increments from the lot
Note 1 to entry: The increments may be grouped together in equal numbers in order to form several aggregate
samples which can be reduced and analysed separately for the purpose of statistical interpretation.
[SOURCE: ISO 8157:2015, 2.6.4]
3.2
delivery
quantity of material transferred at one time
3.3
division
process of producing a number of representative smaller portions, approximately equal in mass to each
other, from a larger mass
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3.4
final sample
representative part of the reduced sample or, where no intermediate reduction is required, of the
aggregate sample
Note 1 to entry: Often, more than one sample is prepared, at the same time, from the reduced sample (or from
the aggregate sample). One or more of these final samples will be used as a laboratory sample or as laboratory
samples, while others may be stored for reference purposes.
[SOURCE: ISO 8157:2015, 2.6.6]
3.5
increment
representative quantity of material taken from a sampling unit
Note 1 to entry: This may be constituted from a number of partial samples.
[SOURCE: ISO 8157:2015, 2.6.3]
3.6
laboratory sample
final sample intended for laboratory inspection or testing
3.7
lot
total quantity of material, assumed to have the same characteristics, to be sampled using a particular
sampling plan
3.8
reduced sample
representative part of the aggregate sample obtained by a process of reduction in such a manner that
the mass approximates to that of the final (laboratory) samples
3.9
reduction
process of producing a representative smaller mass of fertilizer from a larger mass, with the remainder
being discarded
3.10
sampling unit
defined quantity of material having a boundary, which may be physical (e.g. a container) or hypothetical
(e.g. particular time or time interval in the case of a flow of material)
3.11
sampled portion
quantity of a material consisting of all the sampling units from which increments are to be taken and
having characteristics presumed to be uniform
4 Sampling plans and quantitative data
4.1 General
Correct sampling is a difficult operation which requires great care. The need to obtain a fully
representative sample for both the chemical and physical testing of fertilizers cannot be stressed too
much. Sampling plans have been produced to cover a range of quantities of fertilizer and these form the
basis of several International Standards (see the Bibliography).
The sampling plans given in this part of ISO 14820 are not based on strict statistical principles but
samples obtained by following the procedures described in this clause shall be considered to be
representative of the original lot or sampled portion.
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This clause specifies sampling plans for the evaluation of deliveries of fertilizers as well as statutory
control plans which have to be followed in certain circumstances.
For statutory control and the simple commercial evaluation of a small quantity of fertilizer, one final
sample is sufficient but this may subsequently be divided into a number of identical samples.
For the commercial evaluation of a large delivery which is supplied for resale in smaller lots, a number
of samples representing parts of the delivery are required in order to assess the variability of the lot.
NOTE For example, a delivery of 5 000 t should be treated as at least five deliveries of 1 000 t each and five
separate samples should be collected and prepared. The determination in this part of ISO 14820 is based on a
simple relationship between the amount to be sampled and the minimum number of increments to be taken.
The methods of sampling to be used are described in Clause 5.
4.2 Sampling plans
4.2.1 Determination of the number of sampling units which form the sampled portion
4.2.1.1 General
The number of sampling units from which increments are to be taken depends on the size of the lot.
4.2.1.2 Product in packages or containers
In the case of product in packages or containers, the sampling unit is a package and the number of
individual packages from which incremental samples are to be taken should be in accordance with
Table 1. In this context, a package is normally taken to hold no more than 50 kg – larger containers such
as Intermediate Bulk Containers (IBC’s) should be treated according to the procedure in 5.9 or 5.10. For
packages weighing less than 1 kg each, it might be necessary to increase the number taken to ensure a
sufficiently large aggregate sample.
Table 1 — Number of individual packages from which incremental samples are to be taken
Lot size Minimum number of sampling units
4 or fewer packages All packages
More than 4 and up to 10 packages 4
More than 10 and up to 400 packages The nearest whole number above the square root of the number of
packages present.
More than 400 packages 20
4.2.1.3 Product in bulk
In the case of product in bulk, the number of sampling units from which incremental samples should
be taken depends on the total mass present. The number of sampling units to be sampled should be in
accordance with Table 2.
Table 2 — Number of sampling units from which incremental samples are to be taken
Lot size Minimum number of sampling units
25 t or less 10
More than 25 t The nearest whole number above the square
...
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