Soil improvers and growing media - Determination of quantity for materials with particle size greater than 60 mm

This document specifies a method for the determination of quantity of soil improvers and growing media in bulk and in packages. This method is designed with an appropriate precision level so that it can be used to validate any quantity determination made.
This document is applicable to material in any form, reconstituted if necessary, but not to plugs, blocks and slabs sold as such by dimension; for these, see EN 15761.
This document applies to material that is in solid form, but not in block form to be sold by dimension, and which exceeds the particle size restriction in EN 12580 and where the declared nominal particle size is greater than 60 mm.

Bodenverbesserungsmittel und Kultursubstrate - Bestimmung der Menge für Materialien mit einer Partikelgröße über 60 mm

Dieses Dokument legt ein Verfahren für die Bestimmung der Menge von Bodenverbesserungsmitteln und Kultursubstraten bei Lieferung in loser Form und in Packungen fest. Dieses Verfahren wurde mit einem geeigneten Präzisionsniveau gestaltet, damit es zur Validierung von Mengenbestimmungen verwendet werden kann.
Dieses Dokument ist für Material in jeglicher Form, das erforderlichenfalls rekonstituiert ist, anzuwenden, jedoch nicht für Plugs, Blöcke und Platten, die als solche nach Maß verkauft werden, hierfür siehe EN 15761.
Dieses Dokument ist für Material in fester Form anzuwenden, jedoch nicht für Blöcke, die nach Maß verkauft werden, sondern für Material, das die Teilchengrößenbeschränkung überschreitet, die für das in EN 12580 beschriebene Verfahren zutrifft bzw. für Teilchen mit einer Nenngröße über 60 mm.

Amendements du sol et supports de culture - Détermination de la quantité pour les matériaux de granulométrie supérieure à 60 mm

Le présent document spécifie une méthode de détermination de la quantité de support de culture ou d’amendement organique en vrac comme en emballage conditionné. Cette méthode est conçue avec un niveau de fidélité approprié, de sorte à pouvoir être utilisée pour valider n’importe quelle détermination de quantité.
Le présent document concerne les matériaux sous n’importe quelle forme, éventuellement reconstitués, mais pas les produits sous forme de plaques, de blocs ou de dalles vendus en fonction de leurs dimensions (pour ces derniers, voir l’EN 15761).
Le présent document s’applique aux matériaux sous forme solide, mais pas les produits sous forme de blocs vendus en fonction de leurs dimensions, qui dépassent les restrictions de granulométrie imposées dans l’EN 12580 et dont la granulométrie nominale déclarée est supérieure à 60 mm.

Izboljševalci tal in rastni substrati - Določanje količine za materiale z velikostjo delcev, večjo od 60 mm

General Information

Status
Published
Publication Date
08-Nov-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
09-Nov-2022
Due Date
31-Jan-2023
Completion Date
09-Nov-2022

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SLOVENSKI STANDARD
oSIST prEN 15238:2021
01-december-2021

Izboljševalci tal in rastni substrati - Določanje količine za materiale z velikostjo

delcev, večjo od 60 mm

Soil improvers and growing media - Determination of quantity for materials with particle

size greater than 60 mm

Bodenverbesserungsmittel und Kultursubstrate - Bestimmung der Menge für Materialien

mit einer Partikelgröße über 60 mm

Amendements du sol et supports de culture - Détermination de la quantité pour les

matériaux de granulométrie supérieure à 60 mm
Ta slovenski standard je istoveten z: prEN 15238
ICS:
65.080 Gnojila Fertilizers
oSIST prEN 15238:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 15238:2021
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oSIST prEN 15238:2021
DRAFT
EUROPEAN STANDARD
prEN 15238
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 65.080 Will supersede EN 15238:2006
English Version
Soil improvers and growing media - Determination of
quantity for materials with particle size greater than
60 mm

Amendements du sol et supports de culture - Bodenverbesserungsmittel und Kultursubstrate -

Détermination de la quantité pour les matériaux de Bestimmung der Menge für Materialien mit einer

granulométrie supérieure à 60 mm Partikelgröße über 60 mm

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 223.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATIO N
EUROPÄISCHES KOMITEE FÜR NORMUN G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15238:2021 E

worldwide for CEN national Members.
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oSIST prEN 15238:2021
prEN 15238:2021 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Principle ............................................................................................................................................................. 6

5 Apparatus .......................................................................................................................................................... 6

6 Calibration of the measuring cylinder .................................................................................................... 7

7 Sampling ............................................................................................................................................................. 9

8 Determination of bulk density ................................................................................................................... 9

9 Calculation and expression of results.................................................................................................... 12

10 Determination of quantity by weight .................................................................................................... 12

11 Precision .......................................................................................................................................................... 13

12 Test report ....................................................................................................................................................... 13

Annex A (informative) Results of an interlaboratory trial to determine bulk density....................... 14

Bibliography.................................................................................................................................................................. 15

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oSIST prEN 15238:2021
prEN 15238:2021 (E)
European foreword

This document (prEN 15238:2021) has been prepared by Technical Committee CEN/TC 223 “Soil

improvers and growing media”, the secretariat of which is held by NEN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15238:2006.

In comparison with the previous edition, the following technical modifications have been made:

— the text has been editorially revised, no technical changes to the described method have been made;

— references in Clause 2 and the Bibliography have been updated;
— the terms and definitions have been aligned with CEN/TS 17732:—

— the figure has been replaced by two other figures with an example of the apparatus.

This document has been prepared under a Standardization Request given to CEN by the European

Commission and the European Free Trade Association.
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oSIST prEN 15238:2021
prEN 15238:2021 (E)
Introduction

Soil improvers and growing media are generally traded by volume as the weight of the product can be

greatly affected by the moisture content.

NOTE In this document, mass and weight are used interchangeably with the same meaning.

It is important for both consumers and traders to know the volume of product being traded. Furthermore,

for the cultivation of plants, it is the volume of the product, and not the weight, that is generally important.

The volume is calculated from knowing the weight and bulk density of the product, the latter being

determined from weighing a known reference volume of product. As some soil improvers and growing

media are compressible it is important that this aspect be addressed in the method of determining the

bulk density. A suitably competent person should undertake this testing.

For those materials traded by reference to its mass, this document recognizes the effects the moisture

content can have on the quantity declared. Therefore, for such transactions, any weight is accompanied

by the moisture content so that the solid matter content can be calculated.
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oSIST prEN 15238:2021
prEN 15238:2021 (E)
1 Scope

This document specifies a method for the determination of quantity of soil improvers and growing media

in bulk and in packages. This method is designed with an appropriate precision level so that it can be used

to validate any quantity determination made.

This document is applicable to material in any form, reconstituted if necessary, but not to plugs, blocks

and slabs sold as such by dimension; for these, see EN 15761.

This document applies to material that is in solid form, but not in block form to be sold by dimension, and

which exceeds the particle size restriction in EN 12580 and where the declared nominal particle size is

greater than 60 mm.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

CEN/TS 17732:— , Soil improvers and growing media — Terminology
EN 12579:2013, Soil improvers and growing media - Sampling

EN 13040, Soil improvers and growing media - Sample preparation for chemical and physical tests,

determination of dry matter content, moisture content and laboratory compacted bulk density

EN 45501:2015, Metrological aspects of non-automatic weighing instruments
3 Terms and definitions

For the purposes of this document, the terms and definitions given in CEN/TS 17732:— and the

following apply.
3.1
batch
lot

quantity of goods manufactured by the same process under the same conditions, at the same time, and

labelled in the same manner and are assumed to have the same characteristics to be sampled using

a particular sampling plan
3.2
bulk material
material that is not packaged
3.3
container

receptacle or vessel in which material is delivered, including a lorry, ship, boat and packaging

Under preparation. Current stage is: FprCEN/TS 17732:2021.
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oSIST prEN 15238:2021
prEN 15238:2021 (E)
3.4
bulk density

indication of how much 1 l of the product weighs, being determined in a standardized way

Note 1 to entry: The bulk density is expressed in grams per litre (g/l) or in kilograms per cubic metre (kg/m ).

Note 2 to entry: ‘Bulk density’ in this document refers to the apparent density in air (based on conventional mass)

and not the density in vacuum.
3.5
package

container and materials contained therein which are delivered and where the packaging remains with

the material after delivery

Note 1 to entry: A package may be a loose-filled sack, a big bale or a compressed block in packaging.

3.6
quantity
out-turn volume or mass being determined in a standardized way
4 Principle

4.1 For each batch of material, whether for delivery in bulk or in packages, the quantity of material is

determined and declared either by volume or by weight.

4.2 Where the quantity declared is by volume then the material is weighed and then sampled and its

bulk density determined. From this information the volume is calculated (see Clauses 6 to 11).

4.3 Where the quantity declared is by weight then the moisture content is also determined so that the

dry matter weight can be determined and declared (see Clause 12).

NOTE The structure of the material can change with time and handling and this can affect the volume of the

material.
5 Apparatus

5.1 Measuring cylinder, rigid, 50 l ± 1 l with a height to diameter ratio between 0,95:1 and 1:1,

calibrated in accordance with Clause 6. The volume, V , shall be determined to the nearest 20 ml at 20 °C,

with an uncertainty of measurement (k = 2) of no more than 100 ml.

NOTE 1 Information about the measurement and expression of uncertainty is given in the OIML Guide (G1) to

the expression of uncertainty in measurement, (sometimes referred to as GUM) [5].

NOTE 2 A 400 mm internal diameter pipe of height 398 mm with an end cap might be suitable.

NOTE 3 For easy and safe handling of the filled measuring cylinder, lifting and emptying handles are advisable.

For health and safety reasons, the filled measuring cylinder might require two persons to lift it.

5.2 Collar, rigid, of the same diameter as the measuring cylinder (5.1) and with a height of

75 mm ± 5 mm. Equipped with locating lugs to enable it to sit on the measuring cylinder correctly.

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oSIST prEN 15238:2021
prEN 15238:2021 (E)

5.3 Fall controller, 100 mm ± 5 mm mesh size, held no more than 50 mm above the collar.

The fall controller shall be separated from the measuring cylinder (5.1) with collar (5.2) to avoid jogging

or vibrating material in the measuring cylinder during the filling process.

NOTE Wires crossing each other perpendicularly form the mesh with 100 mm square holes.

5.4 Weighing instrument, used to determine the bulk density of
...

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