SIST EN 15346:2015
(Main)Plastics - Recycled plastics - Characterisation of poly(vinyl chloride) (PVC) recyclates
Plastics - Recycled plastics - Characterisation of poly(vinyl chloride) (PVC) recyclates
This European Standard defines a method of specifying delivery conditions for poly(vinyl chloride) (PVC) recyclates.
It gives the most important characteristics and associated test methods for assessing of PVC recyclates intended for use in the production of semi-finished/finished products.
It is intended to support parties involved in the use of recycled PVC to agree on specifications for specific and generic applications.
This European Standard does not cover the characterisation of plastics wastes. See EN 15347.
This European Standard is applicable without prejudice to any existing legislation.
Kunststoffe - Kunststoff-Rezyklate - Charakterisierung von Polyvinylchlorid (PVC)-Rezyklaten
Diese Europäische Norm legt ein Verfahren zum Festlegen der Liefereigenschaften von Polyvinyl¬chlorid (PVC)-Rezyklaten fest.
Die Norm gibt die wichtigsten Eigenschaften und die dazugehörigen Prüfverfahren für die Bewertung einer Einzelcharge von PVC-Rezyklaten an, die für die Produktion von Halbzeugen/Fertigprodukten vorge¬sehen sind.
Sie ist zur Unterstützung von (Vertrags)Partnern vorgesehen, die sich mit dem Einsatz von PVC-Rezyklat beschäftigen, um sich auf Spezifikationen für bestimmte oder allgemeine Anwendungen zu einigen.
Diese Europäische Norm befasst sich nicht mit der Charakterisierung von Kunststoffabfällen. Siehe hierzu EN 15347.
Diese Europäische Norm beeinträchtigt bei ihrer Anwendung keinerlei geltende Vorschriften.
Plastiques - Plastiques recyclés - Caractérisation des recyclats de poly(chlorure de vinyle) (PVC)
La présente Norme européenne définit une méthode de spécification des conditions de livraison des recyclats de poly(chlorure de vinyle) (PVC).
Elle donne les caractéristiques les plus importantes et les méthodes d'essai associées pour évaluer les recyclats de PVC destinés à être utilisés dans la production de produits semi-finis/finis.
Elle est destinée à assister les parties concernées par l'utilisation de PVC recyclé pour convenir de spécifications concernant des applications spécifiques ou générales.
La présente Norme européenne ne couvre pas la caractérisation des déchets de plastiques. Voir l’EN 15347.
La présente Norme européenne est applicable sans préjudice de toute réglementation existante.
Polimerni materiali - Reciklirani polimerni materiali - Karakterizacija reciklatov polivinilklorida (PVC)
Ta evropski standard določa metodo za določevanje dobavnih pogojev za reciklate polivinilklorida (PVC).
Navaja najpomembnejše značilnosti in povezane preskusne metode za ocenjevanje reciklatov polivinilklorida za uporabo pri proizvodnji polizdelkov/končnih izdelkov.
Namenjen je kot podpora vsem stranem, ki uporabljajo reciklirani polivinilklorid, pri dogovarjanju glede specifikacij za posebno in splošno uporabo.
Ta evropski standard ne vsebuje karakterizacije plastičnih odpadkov. Glejte standard EN 15347.
Ta evropski standard ne posega v nobeno obstoječo zakonodajo.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Polimerni materiali - Reciklirani polimerni materiali - Karakterizacija reciklatov polivinilklorida (PVC)Kunststoffe - Kunststoff-Rezyklate - Charakterisierung von Polyvinylchlorid (PVC)-RezyklatenPlastiques - Plastiques recyclés - Caractérisation des recyclats de poly(chlorure de vinyle) (PVC)Plastics - Recycled plastics - Characterisation of poly(vinyl chloride) (PVC) recyclates83.080.20PlastomeriThermoplastic materials13.030.50RecikliranjeRecyclingICS:Ta slovenski standard je istoveten z:EN 15346:2014SIST EN 15346:2015en,fr,de01-januar-2015SIST EN 15346:2015SLOVENSKI
STANDARDSIST EN 15346:20081DGRPHãþD
SIST EN 15346:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15346
November 2014 ICS 13.030.50; 83.080.20 Supersedes EN 15346:2007English Version
Plastics - Recycled plastics - Characterization of poly(vinyl chloride) (PVC) recyclates
Plastiques - Plastiques recyclés - Caractérisation des recyclats de poly(chlorure de vinyle) (PVC)
Kunststoffe - Kunststoff-Rezyklate - Charakterisierung von Polyvinylchlorid (PVC)-Rezyklaten This European Standard was approved by CEN on 20 September 2014.
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, 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:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15346:2014 ESIST EN 15346:2015
EN 15346:2014 (E) 2 Contents Page Foreword .4 Introduction .5 1 Scope .6 2 Normative references .6 3 Terms and definitions .7 4 Characterization of PVC recyclates .7 5 Quality assurance .9 Annex A (informative)
Typical compositions of PVC compounds . 10 Annex B (normative)
Determination of bulk density . 11 B.1 General . 11 B.2 Material . 12 B.3 Apparatus . 12 B.4 Preparation of test sample . 12 B.5 Procedure . 12 B.6 Expression of results . 12 B.7 Test report . 13 Annex C (normative)
Determination of tetrahydrofuran insoluble impurities . 14 C.1 General . 14 C.2 Apparatus . 14 C.3 Reagent . 14 C.4 Procedure . 15 C.5 Expression of results . 15 C.6 Test report . 16 Annex D (normative)
Size and distribution of particles contained in micronized recycled PVC compounds by sieving . 17 D.1 General . 17 D.2 Reagents . 17 D.3 Apparatus . 17 D.4 Procedure . 17 D.5 Number of determinations . 18 D.6 Determination and expression of the results . 18 D.7 Test report . 19 Annex E (normative)
Size and distribution of recycled PVC crushes by sieving . 20 E.1 General . 20 SIST EN 15346:2015
EN 15346:2014 (E) 3 E.2 Apparatus . 20 E.3 Procedure . 20 E.4 Number of determinations . 21 E.5 Determination and expression of the results . 21 E.6 Test report . 22 Annex F (normative)
Fitness for processing of PVC recyclates by calendering . 23 F.1 General . 23 F.2 Apparatus . 23 F.3 Procedure . 23 Annex G (normative)
Fitness for processing of PVC recyclates by extrusion . 25 G.1 General . 25 G.2 Apparatus . 25 G.3 Procedure . 25 Bibliography . 26
SIST EN 15346:2015
EN 15346:2014 (E) 4 Foreword This document (EN 15346:2014) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN. 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 May 2015 and conflicting national standards shall be withdrawn at the latest by May 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15346:2007. EN 15346:2014 includes the following significant technical change with respect to EN 15346:2007: revision of Annex C. This European Standard is one part of series of CEN publications on Plastics Recycling which is structured as follows: — EN 15342, Plastics — Recycled Plastics — Characterization of polystyrene (PS) recyclates — EN 15343, Plastics — Recycled Plastics — Plastics recycling traceability and assessment of conformity and recycled content — EN 15344, Plastics — Recycled Plastics — Characterization of Polyethylene (PE) recyclates — EN 15345, Plastics — Recycled Plastics — Characterization of Polypropylene (PP) recyclates — EN 15346, Plastics — Recycled plastics — Characterization of poly(vinyl chloride) (PVC) recyclates — EN 15347, Plastics — Recycled Plastics — Characterization of plastics wastes — EN 15348, Plastics — Recycled plastics — Characterization of poly(ethylene terephthalate) (PET) recyclates — CEN/TR 15353, Plastics — Recycled plastics — Guidelines for the development of standards for recycled plastics 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15346:2015
EN 15346:2014 (E) 5 Introduction Recycling of plastics waste is one type of material recovery process intended to save resources (virgin raw materials, water, and energy), while minimizing harmful emissions into air, water and soil as well as any impacts on human health. The environmental impact of recycling has to be assessed over the whole life cycle of the recycling system (from the waste generation point to the disposal of final residues). To ensure that recycling constitutes the best environmental option for treating the available waste, some prerequisites should preferably be met: — recycling scheme being contemplated should generate lower environmental impacts than alternative recovery options; — existing or potential market outlets should be identified that will secure a sustainable industrial recycling operation; — collection and sorting schemes should be properly designed to deliver recyclable plastics waste fractions fitting reasonably well with the available recycling technologies and with the (changing) needs of the identified market outlets, preferably at minimum costs to society. This European Standard has been produced in accordance with the guidance produced by CEN on Environmental Aspects and in accordance with CEN/TR 15353. NOTE CEN/TR 15353 considers the general environmental aspects which are specific to the recycling process. It is often impossible to trace back each individual product at the end user stage and to check whether the product has been used correctly through its life. Consequently products are out of industrial control for a period of time. It is possible that during this period contamination with other materials might occur that could affect the product's suitability for recycling into the intended application. SIST EN 15346:2015
EN 15346:2014 (E) 6 1 Scope This European Standard defines a method of specifying delivery conditions for poly(vinyl chloride) (PVC) recyclates. It gives the most important characteristics and associated test methods for assessing of PVC recyclates intended for use in the production of semi-finished/finished products. It is intended to support parties involved in the use of recycled PVC to agree on specifications for specific and generic applications. This European Standard does not cover the characterization of plastics wastes. See EN 15347. This European Standard is applicable without prejudice to any existing legislation. 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 12099, Plastics volatile content CEN/TR 15353, plastics EN ISO 182-2, tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated -l) EN ISO 182-3,
of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated -m) EN ISO 182-4, ency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated -4) EN ISO 306,
bfpl mMp) EN ISO 472,
EN ISO 527-1, -1) EN ISO 527-2, extrusion plastics bfpl olq-l) EN ISO 868, hardness) bfpl rpr) EN ISO 1183-1, mining the density of non-methodf liquid pyknometer method and titration method bfpl 11rm-1) SIST EN 15346:2015
EN 15346:2014 (E) 7 EN ISO 1269, matter (including water) bfpl 1lps) EN ISO 3451-5, -o) EN ISO 6186,
ISO 182-1, Plastics — aetermination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 1: Congo red method ISO 565, Test sieves — Metal wire clothf perforated metal plate and electroformed sheet — Nominal sizes of openings 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 472 and CEN/TR 15353 and the following apply. 3.1 sieve retention percentage of the recycled test sample retained on a sieve at the end of the test Note 1 to entry: The sieve retention is expressed in per cent (mass fraction). 3.2 container retention percentage of recycled material retained in the container at the bottom of a stack of sieves, or under a single sieve, at the end of the test compared to the mass of the sample tested 3.3 average particulate dimension single value of size, expressed to the nearest 0,001 mm, representing the dominant particle size for the whole test sample 4 Characterization of PVC recyclates A single batch is the quantity of recyclate that has homogeneous characteristics within the specified tolerances. The characteristics of PVC recyclates, given in Table 1, are divided into two types: — required characteristics needed to characterize PVC recyclates in general, and required for all recyclates; — optional characteristics needed to characterize PVC recyclates according to customer specifications and applications. These characteristics shall be assessed by using the test methods given in Table 1. A certificate of analysis giving the test results for each batch of recyclates shall be provided by the supplier to the purchaser upon request. NOTE Typical compositions of PVC compounds are given in Annex A. SIST EN 15346:2015
EN 15346:2014 (E) 8 The supplier shall provide the necessary information about the material composition of the recyclates, as specified by the purchaser or required by the applicable regulations. Table 1 — Characterization of PVC recyclates Characteristic Units Test method PVC-U PVC-P Comments Required Bulk density kg/m3 Annex B X X
Ash content % EN ISO 3451-5 Method A X X Linked with filler and mineral content Colour
Visual Inspection X X e.g. natural colour, single, mixed Hardness
EN ISO 868
X For calendering stiffness may be evaluated instead of hardness. See Annex F. Impurities % Annex C X X An alternative method agreed by both parties may also be used. Particle size and distribution g, % Annex D a Annex E b X X Size distribution is needed for materials with a low particle size. Shape
Visual X X e.g. micronized material, pellets, particles Optional Dry flow rate s EN ISO 6186 O O Recommended for micronized materials or small particle size recyclates Density kg/m3 EN ISO 1183-1 Method A O O
Fitness of processing of PVC recyclates — by calendering — by extrusion
Annex F Annex G O O O O
Residual humidity % EN 12099 c O O Weight loss, 105 °C Tensile stress at yield MPa EN ISO 527-1 EN ISO 527-2 O O
Tensile strain at break % EN ISO 527-1 EN ISO 527-2 O O Elongation Thermal stability min ISO 182-1 EN ISO 182-2 EN ISO 182-3 EN ISO 182-4 O O Linked to stabilizer content Specify which is used.
Vicat softening temperature °C EN ISO 306 Method B50 O
SIST EN 15346:2015
EN 15346:2014 (E) 9 Volatile content % EN ISO 1269 O O Linked to moisture content Key X required characteristics to be quantified O optional characteristics to be quantified Other tests may be carried out by an agreement between the purchaser and the supplier. The test results should be reported. a Only applicable for micronized recycled PVC compounds. b Only applicable for recycled PVC crushes. c Although the scope of EN 12099 is limited, it is considered relevant. 5 Quality assurance In order that the purchaser of the recyclate can have confidence in the quality of the product, the supplier shall maintain records of the quality control carried out, including incoming materials, processes and finished products. NOTE A quality management system certified to EN ISO 9001 may be a suitable guarantee of consistent recyclate quality but not the recycled content. The specification and the standard deviation or range of values within and between batches of material shall be agreed between the supplier and the purchaser. Where a statement of recycled content, or the previous history of the material, is requested, documentary evidence shall be provided. These records should be available to the purchaser on request. Where a recyclate has been produced via a melt process, the supplier may choose to state the level of filtration applied during that process. This will determine the maximum size of any non-melting contaminants present in the recyclate. The statement of filtration level shall include details of the filter. Recyclates which have not passed through a melt process cannot be quantified in the same way, and the supplier may state this. SIST EN 15346:2015
EN 15346:2014 (E) 10 Annex A (informative)
Typical compositions of PVC compounds Resins of vinyl chloride are always converted as compounds that composition depends upon the application. Typical compositions of compounds are given in Table A.1. PVC recyclates are made from these compounds. Table A.1 — Typical compositions of PVC compounds Dimensions in phr (parts per hundred parts of resin) Application PVC resin Plasticizer Filler range Other additives a Rigid packaging 100 0 0 5 to 20 Flexible packaging 100 20 to 40 0 1 to 20 Plastic piping components for pressure applications 100 0 2 to 5 4 Plastic piping components for non-pressure applications 100 0 0 to 20 3 to 5 Windows and doors 100 0 5 to 10 7 to 16 Other profiles 100 0 0 to 40 5 to 15 Cables 100 30 to 60 0 to 50 b 3 to 10 Flooring 100 25 to 50 0 to 300 2 to 5 Sheets 100 40 to 70 0 to 30 2 to 10 Coated fabrics 100 40 to 90 0 to 30 7 to 20 c a Such as stabilizers, impact modifiers, lubricants, etc. b Bedding up to about 250 phr. c Synthetic textile fibres included. SIST EN 15346:2015
EN 15346:2014 (E) 11 Annex B (normative)
Determination of bulk density B.1 General This test method specifies a method of determining the bulk density, i.e. the mass per unit of volume, of loose material (powder or granular material) that can be poured from a funnel of specific design. When the method is applied to relatively coarse materials, rather variable results might be obtained, owing to the error introduced when a straightedge blade is drawn across the top of the cylinder. A knowledge of bulk density is of limited value in estimating the relative fluffiness or bulk of moulding materials, unless their densities in the moulded condition are approximately the same. It therefore gives a fairly good idea of stability of mixing, presence of humidity and stability between batches (consistency).
Key 1 volume of approximately 2 500 ml, diameter of hole at base 55 mm ± 0,25 mm 2 inner height: 200 mm ± 0,2 mm, Inner diameter: 113 mm ± 0,2mm, Volume: 2 000 ml 3 angle approximately 65° 4 diameter of hole approximately 60 mm 5 distance of 100 mm ± 0,5 mm Figure B.1 — Typical apparatus for determining bulk density SIST EN 15346:2015
EN 15346:2014 (E) 12 B.2 Material Powder or granular material. B.3 Apparatus B.3.1 Balance, accurate to 0,1 g. B.3.2 Measuring cylinder, smoothly finished inside, which shall be constructed of metal, of a capacity of 2 000 ml (Inner height 200 mm and inner diameter 113 mm). B.3.3 Conical funnel, of the form and dimensions shown in Figure B.1, of a capacity of 2 500 ml, internal diameter at base 55 mm, equipped with a metal trap plate for the lower orifice. Diameter of the orifice in trap plate 60 mm. B.4 Preparation of test sample Mix the sample well before the test. B.5 Procedure B.5.1 Support the funnel (B.3.3) vertically with its lower orifice 100 mm above the measuring cylinder (B.3.2) and coaxial with it. Mix the sample of the powder or granular material well before testing. With the lower orifice of the funnel closed by means of the trap, place a quantity of 2 200 ml to 2 400 ml of the sample material in the funnel. B.5.2 Open the trap quickly and allow the sample to flow into the measuring cylinder. When the measuring cylinder is full, draw a straightedge blade across the top of the measuring cylinder to remove any excess of the sample. Weigh the contents of the measuring cylinder to the nearest 0,1 g, using the balance (B.3.1). B.5.3 Repeat procedure B.5.1 and B.5.2 to complete at least two determinations of the sample under test. B.6 Expression of results The bulk density of the material under test is given, in grams per millilitre, by Formula (B.1): mV
(B.1) where m is the mass, in grams, of the contents of the measuring cylinder; V is the volume, in millilitre, of the measuring cylinder. Take as the result the arithmetic mean of the results of the determinations obtained by following the procedure B.5. SIST EN 15346:2015
EN 15346:2014 (E) 13 B.7 Test report The test report shall include the following information: a) reference to this European Standard (EN 15346:2014); b) all details necessary for complete identification of the material tested; c) individual results determined following the procedure B.5 and the arithmetic mean of the results; d) details of any deviation from the test method, as well as any incident which might have influenced the results; e) date of the test. SIST EN 15346:2015
EN 15346:2014 (E) 14 Annex C (normative)
Determination of tetrahydrofuran insoluble impurities C.1 General The determination of the amount of impurities in recycled PVC compounds, which are insoluble in tetrahydrofuran (THF). C.2 Apparatus C.2.1 Weighing scales with a precision of ± 0,01 g. C.2.2 Magnetic stirrer with an adjustable speed of 0 rpm to 1 200 rpm. C.2.3 Triangular magnetic stirring bar. C.2.4 Fume cupboard. C.2.5 Beaker. C.2.6 Conical Erlenmeyer flask with stopper and a venting tube. C.2.7 Woven polyamide filter with mesh of 125 microns. C.2.8 Pair of gloves. C.2.9 Safety glasses. C.2.10 Conical grid metal support for the filter. C.2.11 Rinsing pipette. C.2.12 Microscope. C.3 Reagent Tetrahydrofuran (THF), solvent. WARNING — It is most important for safety reasons that personal protective clothing is used when applying solvents to the test specimen. The use of solvents in regard to application of this European Standard might be further controlled under National and/or regional legislation. In particular, the used THF has to be collected, stored and sent to solvent recovery. SIST EN 15346:2015
EN 15346:2014 (E) 15 C.4 Procedure C.4.1 Take a test specimen of (50 ± 0,1) g of the recycled PVC sample to be tested with a 6 mm maximum size from the sorting of sifted or crushed PVC. Record the actual mass of the test specimen, MS. C.4.2 Put on gloves and safety glasses. All operations shall be carried out in the fume cupboard. C.4.3 Prepare an Erlenmeyer flask with 800 ml of THF, put in it the triangular magnet and start the stirrer, adjusted to a speed of 500 rpm for 3 h and maintained at (23 ± 2) °C. C.4.4 Pour the test specimen gradually into the Erlenmeyer flask in order to avoid clumping. C.4.5 Put the stopper in place with a tube to vent the THF vapours from the flask. C.4.6 Weigh the polyamide filter with a mesh of 125 microns (MF). C.4.7 When the dissolution of the PVC is complete, filter the solution through the polyamide filter of 125 microns fitted on a conical metal grid support at the top of a container (receptacle). C.4.8 Rinse the Erlenmeyer flask and the stirrer over the filter. C.4.9 Rinse the insoluble material recovered in the filter. C.4.10 Dry the filter with the insoluble material naturally by keeping it in the ventilated fume cupboard for 12 h. C.4.11 After 12 h, weigh the filter with the insoluble material (MT). C.5 Expression of results The mass of the insoluble material, MI, is given by the difference between MF and MT expressed in grams to the nearest 0,1 g. Calculate the percentage of insoluble material from Formula (C.1): (MT - MF) / MS × 100
(C.1) The insoluble material can be analysed by means of a microscope, comparing it with a sample of reference impurities. SIST EN 15346:2015
EN 15346:2014 (E) 16 C.6 Test report The test report shall include the following information: a) reference to this test method, i.e. EN 15346:2014, Annex C; b) all details necessary for complete identification of the batch of the recycled PVC compound; c) the actual mass of the test specimen, MS, the initial mass of the filter, MF, the mass of the filter with the insoluble material, MT, and the mass of the insoluble material, MI (g); d) the percentage of insoluble material; e) type of insoluble impurities and foreign matter, if required; f) date of the test. SIST EN 15346:2015
EN 15346:2014 (E) 17 Annex D (normative)
Size and distribution of particles contained in micronized recycled PVC compounds by sieving D.1 General This determination of the dimensional distribution (size) of the particles of micronized recycled PVC compound is based on the measurement of the quantities retained in a range of sieves having meshes of various sizes. A portion of the recycled PVC compound is filtered through a single sieve, or stack of sieves of various mesh opening sizes, helped by mechanical vibrations. When several sieves are selected to form a stack, the sieves are assembled in ascending order of the mesh opening sizes so that the largest mesh opening is at the top. The results are expressed in terms of quantity retained on the various sieves or as the mean particulate dimension for the whole sample tested (that which has the greatest frequency). This test method is not recommended to be used with sieves having sizes of mesh openings lower than 0,125 mm. D.2 Reagents Aluminium oxide powder or equivalent, antistatic agent. D.3 Apparatus D.3.1 Balance accurate to ± 0,1 g, the range and the size sufficiently adapted to the individual sieves and to retained recycled matter in these sieves. D.3.2 Sieves with a nominal diameter of 200 mm according to ISO 565, supplemented by a lid and by a recei
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