SIST EN 15238:2007
Soil improvers and growing media - Determination of quantity for materials with particle size greater than 60 mm
Soil improvers and growing media - Determination of quantity for materials with particle size greater than 60 mm
This standard specifies a method for the determination of quantity of soil improvers and growing media in bulk and in packages. This is a reference method, which is designed with an appropriate precision level aimed at enabling validation of any quantity declaration made.
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 [1] and where the declared nominal particle size is greater than 60 mm. This method is applicable for products where a mass fraction of less than 10% of material is retained on the 100 mm fall controller.
NOTE 1 The requirements of this standard may differ from the national legal requirements for the declaration of quantity for the products concerned.
NOTE 2 Where there is no legal requirement to use this method, for example in quantity control of packaged product, then it is permissible for any other methods to be used so long as these other methods can be demonstrated to be comparable with this standard method in giving the same quantity with the same precision.
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 a 60 mm
Izboljševalci tal in rastni substrati - Določevanje količine za materiale z velikostjo delcev, večjo od 60 mm
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Soil improvers and growing media - Determination of quantity for materials with particle size greater than 60 mmAmendements du sol et supports de culture - Détermination de la quantité pour les matériaux de granulométrie supérieure a 60 mmBodenverbesserungsmittel und Kultursubstrate - Bestimmung der Menge für Materialien mit einer Partikelgröße über 60 mmTa slovenski standard je istoveten z:EN 15238:2006SIST EN 15238:2007en,fr,de65.080GnojilaFertilizersICS:SLOVENSKI
STANDARDSIST EN 15238:200701-september-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15238December 2006ICS 65.080 English VersionSoil improvers and growing media - Determination of quantity formaterials with particle size greater than 60 mmAmendements du sol et supports de culture -Détermination de la quantité pour les matériaux degranulométrie supérieure à 60 mmBodenverbesserungsmittel und Kultursubstrate -Bestimmung der Menge für Materialien mit einerPartikelgröße über 60 mmThis European Standard was approved by CEN on 21 October 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15238:2006: E
EN 15238:2006 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and definitions.5 4 Symbols and abbreviated terms.6 5 Principle.6 6 Apparatus.6 7 Calibration of the measure.8 8 Sampling.9 9 Method for density determination.9 10 Calculation and expression of results.10 11 Precision.11 12 Test report for declarations of volume.11 13 Weight.11 14 Test report for declarations of weight.12 Annex A (informative)
Results of an interlaboratory trial to determine density.13 Bibliography.14
EN 15238:2006 (E) 3 Foreword This document (EN 15238:2006) has been prepared by Technical Committee CEN/TC 223 “Soil improvers and growing media”, the secretariat of which is held by BSI. 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 June 2007, and conflicting national standards shall be withdrawn at the latest by June 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 15238:2006 (E) 4 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. 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 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 density. A suitably competent person should undertake this testing. For those materials traded by reference to its mass, this document recognises 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.
EN 15238:2006 (E) 5 1 Scope This standard specifies a method for the determination of quantity of soil improvers, excluding liming materials and growing media in bulk and in packages. This is a reference method, which is designed with an appropriate precision level aimed at enabling validation of any quantity declaration made.
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 [1] and where the declared nominal particle size is greater than 60 mm. This method is applicable for products where a mass fraction of less than 10% of material is retained on the 100 mm fall controller.
NOTE 1 The requirements of this standard may differ from the national legal requirements for the declaration of quantity for the products concerned.
NOTE 2 Where there is no legal requirement to use this method, for example in quantity control of packaged product, then it is permissible for any other methods to be used so long as these other methods can be demonstrated to be comparable with this standard method in giving the same quantity with the same precision.
2 Normative references The following referenced documents are indispensable for the application 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. EN 12579:1999, 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, Metrological aspects of non-automatic weighing instruments 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 batch quantity of goods manufactured by the same process under the same conditions and labelled in the same manner and assumed to have the same characteristics 3.2 bulk material material that is not packaged 3.3 container any container, including lorry, boat, and package
3.4 density density of the material as received or reconstituted for use in accordance with the manufacturer's instructions, determined by the method specified in this standard
EN 15238:2006 (E) 6 3.5 package container in which the goods are delivered and which remains with them after delivery 3.6 strike transparent sheet of flat material, normally glass, which is easily large enough to cover the top of the measure. 3.7 volume out-turn volume determined by the method specified in this standard. 4 Symbols and abbreviated terms For the purposes of this document, the following symbols and abbreviated terms apply: D density of material, as determined by the method specified in this standard; V the volume of material; mx the mass of an item. 5 Principle 5.1 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. 5.2 Where the quantity declared is by volume then the material is weighed and then sampled and its density determined. From this information the volume is calculated.
5.3 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.
NOTE The structure of the material may change with time and handling and this may affect the volume of the material.
6 Apparatus 6.1 Measure, Rigid, 50 l ± 1 l with a height to diameter ratio between 0,95:1 and 1:1, calibrated in accordance with Clause 7. The volume, V1 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). NOTE 2 A 400 mm internal diameter pipe of height 398 mm with an end cap may be suitable. NOTE 3 For easy and safe handling of the filled measure, lifting and emptying handles are advisable.
For health and safety reasons, the filled measure may require two persons to lift it. 6.2 Collar, Rigid, of the same diameter as the measure (6.1) and with a height of 75 mm ± 5 mm. Equipped with locating lugs to enable it to sit on the measure correctly.
EN 15238:2006 (E) 7 6.3 Fall Controller, A fall controller of 100 mm ± 5 mm mesh size, held no more than 50 mm above the collar, equipped with locating lugs to enable it to sit on the collar correctly.
NOTE
Wires crossing each other perpendicularly form the mesh with 100 mm square holes. Figure 1 shows a diagram of the apparatus as described in 6.1 to 6.3.
123 Key 1 Fall controller of square mesh with 100 mm ± 5 mm openings held not more that 50 mm above filling collar 2 Fillin
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SLOVENSKI oSIST prEN 15238:2005
PREDSTANDARD
julij 2005
Izboljševalci tal in rastni substrati – Določevanje količine izboljševalcev tal in
rastnih substratov v materialih z velikostjo delcev več kot 60 mm
Soil improvers and growing media - Determination of quantity for materials with
particle size greater than 60 mm
ICS 65.080 Referenčna številka
oSIST prEN 15238:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
prEN 15238
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2005
ICS
English version
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
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 Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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 NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15238:2005: E
worldwide for CEN national Members.
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prEN 15238:2005 (E)
Contents Page
1 Scope.5
2 Normative references.5
3 Terms and definitions.5
4 Symbols and abbreviated terms.6
5 Principle.6
5.1 .6
5.2 .6
6 Apparatus.7
6.1 Measure,.7
6.1.1 Calibration of the measure.7
6.2 Collar,.8
6.3 Fall Controller,.8
6.4 Weighing Instrument,.9
6.5 Straight edge.9
6.6 Shovel, scoop.9
7 Sampling.9
8 Method for density determination .10
8.1 .10
8.2 .10
8.3 .10
8.4 .10
8.5 .10
8.6 .10
9 Calculation and expression of results.10
9.1 Density.10
9.2 Volume.11
10 Precision.11
11 Test report for volume declarations.11
12 Mass.12
13 Test report for weight declarations.12
Annex A (informative) Results of an interlaboratory trial to determine density .13
Annex B (Informative) Picture of assembled equipment.14
2
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prEN 15238:2005 (E)
Foreword
This document (prEN 15238:2005) has been prepared by Technical Committee CEN/TC 223 "Soil
improvers and growing media", the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
3
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prEN 15238:2005 (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. It is important for both consumers and traders to know
the volume of product being traded. Furthermore, for the plant growing it is the volume of the
product, and not the weight, that is generally important. The volume is calculated from knowing the
weight and density of the product, the latter being determine from weighing a known 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 density.
For those materials traded by reference to its mass, this standard recognises the effects the
moisture content can have on the quantity declared. Therefore, for those transactions, this standard
requires that any weight shall be accompanied by the moisture content so that the solid matter
content can be calculated.
4
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prEN 15238:2005 (E)
1 Scope
This standard specifies a method for the determination of a quantity of soil improvers and growing media in bulk and in
packages. This is a reference method, which is designed with an appropriate precision level so that it can be used to
validate any quantity declaration made.
This European Standard applies to material that is in solid form, and which is not in block form to be sold by dimension,
and which exceeds the particle size restriction in EN12580 method or where the declared nominal particle size is greater
than 60 mm. This method is applicable for product where less than 10% (W/W) of material is retained on the 100 mm fall
controller.
NOTE The requirements of this standard may differ from the national legal requirements for the declaration of quantity
for the products concerned.
NOTE Where there is no legal requirement to use this method, for example in quantity control of packaged product,
then it is permissible for any other method to be used so long as these other methods can be demonstrated to be
comparable with this standard method in giving the same quantity with the same precision.
2 Normative references
The following referenced documents are indispensable for the application 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.
EN 12579 Soil improvers and growing media – Sampling.
EN 12580 Soil improvers and growing media – Determination of a quantity
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 Metrological aspects of non-automatic weighing machines.
ISO 5725 Accuracy (trueness and precision) of measurement methods and results
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply
3.1
batch
quantity of goods manufactured by the same process under the same conditions and labelled in the same
manner and assumed to have the same characteristics.
5
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prEN 15238:2005 (E)
3.2
bulk material
material that is not packaged.
3.3
container
any container, including lorry, boat, and package
3.4
density
density of the material as received or reconstituted for use in accordance with the manufacturer's instructions,
determined by the method specified in this standard.
3.5
package
container in which the goods are delivered and which remains with them after delivery.
3.6
volume
out-turn volume determined by the method specified in this standard.
4 Symbols and abbreviated terms
D density of material, as determined by the method specified in this standard.
V the volume of material
m the mass of an item.
x
5 Principle
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.
5.1
Where the quantity declared is by volume then the material is weighed and then sampled and its density
determined. From this information the volume is calculated. Clauses 6 to 11 apply.
5.2
Where the quantity declared is by weight then then moisture content is also determined so that the dry matter
weight can be determined and declared. Clauses 12 and 13 of the standard apply.
NOTE The structure of the material may change with time and handling and this may affect the volume of the material.
A suitably competent person should undertake this testing.
6
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prEN 15238:2005 (E)
6 Apparatus
6.1 Measure,
Rigid, 50 l ± 1 l with a height to diameter ratio between 0,95:1 and 1:1. The volume, V shall be known to the
1
nearest 20 ml at 20°C, with an uncertainty of measurement (k=2) of no more than 100 ml.
NOTE A 400 mm internal diameter pipe of height 398 mm with an end cap may be suitable.
NOTE For easy and safe handling of the filled measure, lifting and emptying handles are advisable. For health and
safety reasons, the filled measure may require two persons to lift.
6.1.1 Calibration of the measure
To calibrate the measure, place the measure and sufficient water together in a
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