EN 16785-2:2018

SLOVENSKI STANDARD
01-junij-2018
Bioizdelki - Biodelež - 2. del: Ugotavljanje biodeleža z metodo materialne bilance
Bio-based products - Bio-based content - Part 2: Determination of the bio-based content
using the material balance method
Biobasierte Produkte - Biobasierter Gehalt - Teil 2: Bestimmung des biobasierten
Gehalts unter Verwendung der Materialbilanzmethode
Produits biosourcés - Teneur biosourcée - Partie 2: Détermination de la teneur
biosourcée à l'aide de la méthode basée sur le bilan matière
Ta slovenski standard je istoveten z: EN 16785-2:2018
ICS:
13.020.55 Biološki izdelki Biobased products
71.040.40 Kemijska analiza Chemical analysis
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 16785-2
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2018
EUROPÄISCHE NORM
ICS 13.020.55; 71.040.40
English Version
Bio-based products - Bio-based content - Part 2:
Determination of the bio-based content using the material
balance method
Produits biosourcés - Teneur biosourcée - Partie 2 : Biobasierte Produkte - Biobasierter Gehalt - Teil 2:
Détermination de la teneur biosourcée à l'aide de la Bestimmung des biobasierten Gehalts unter
méthode basée sur le bilan-matières Verwendung der Materialbilanzmethode
This European Standard was approved by CEN on 24 December 2017.

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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16785-2:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 6
5 Natural products . 6
6 Rules for allocation of elements . 6
7 Procedure. 7
7.1 Information and data to be provided for calculation . 7
7.2 Calculation of the bio-based content . 7
8 Traceability system . 8
9 Validation of the calculated bio-based content . 8
10 Test report . 9
Annex A (informative) Examples of determination of the bio-based content . 10
A.1 EXAMPLE 1: Flexible insulation panel . 10
A.2 EXAMPLE 2: Bio-based ethyl acetate . 11
A.3 EXAMPLE 3: Water based decorative flat paint . 13
A.4 EXAMPLE 4 : Particle boards . 14
A.5 EXAMPLE 5 : Graphic paper . 15
Bibliography . 16

European foreword
This document (EN 16785-2:2018) has been prepared by Technical Committee CEN/TC 411 “Bio-based
products”, the secretariat of which is held by NEN.
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 September 2018, and conflicting national standards
shall be withdrawn at the latest by September 2018.
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.
EN 16785 consists of the following parts:
— EN 16785-1, Bio-based products — Bio-based content — Part 1: Determination of the bio-based
content using the radiocarbon analysis and elemental analysis
— EN 16785-2, Bio-based products — Bio-based content — Part 2: Determination of the bio-based
content using the material balance method (the present document)
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.

Introduction
Bio-based products from forestry and agriculture have a long history of application, such as paper,
board and various chemicals and materials. The last decades have seen the emergence of new bio-based
products in the market. Some of the reasons for the increased interest lie in the bio-based products’
benefits in relation to the depletion of fossil resources and climate change. Bio-based products may also
provide additional product functionalities. This has triggered a wave of innovation with the
development of knowledge and technologies allowing new transformation processes and product
development.
Acknowledging the need for common standards for bio-based products, the European Commission
)
issued Mandate M/492 , resulting in a series of standards developed by CEN/TC 411, with a focus on
bio-based products other than food, feed and biomass for energy applications.
The standards of CEN/TC 411 “Bio-based products” provide a common basis on the following aspects:
— Common terminology;
— Bio-based content determination;
— Life Cycle Assessment (LCA);
— Sustainability aspects;
— Declaration tools.
It is important to understand what the term bio-based product covers and how it is being used. The
term ‘bio-based’ means 'derived from biomass'. Bio-based products (bottles, insulation materials, wood
and wood products, paper, solvents, chemical intermediates, composite materials, etc.) are products
which are wholly or partly derived from biomass. It is essential to characterize the amount of biomass
contained in the product by, for instance, its bio-based content or bio-based carbon content.
The bio-based content of a product does not provide information on its environmental impact or
sustainability, which may be assessed through LCA and sustainability criteria. In addition, transparent
and unambiguous communication within bio-based value chains is facilitated by a harmonized
framework for certification and declaration.
The purpose of this European Standard is to provide a method for the determination of the bio-based
content of solid, liquid and gaseous products, based on the accounting of materials entering and leaving
the system and on traceability of the materials during processing, to ensure the physical presence of the
bio-based material in the output.
Although it is not the purpose of this method, the claimed bio-based content of the output could be
validated by analysis using EN 16785-1 [1].

1) A mandate is a standardization task embedded in European trade laws. Mandate M/492 is addressed to the
European Standardization bodies, CEN, CENELEC and ETSI, for the development of horizontal European
Standards for bio-based products.
1 Scope
This part of EN 16785 specifies a method of determining the bio-based content in products using the
material balance applied to a representative product batch in a production unit.
This European Standard is applicable to any solid, liquid and gaseous bio-based product containing
carbon, obtained by chemical synthesis, mixing or assembling, provided that:
— for a product batch, the composition of the product and the bio-based content of each input, output
and loss in the production unit are known; and
— the bio-based content of the product is verifiable by analysis.
This method incorporates only the physical parts of the input and output stream as present in the final
product, and does not incorporate material inputs for the energy to be used during the production
process.
This method is not needed for the determination of the bio-based content in natural products wholly
derived from biomass.
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 16575, Bio-based products - Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16575 and the following apply.
3.1
material balance
comparison of physical quantities, expressed by mass, of inputs and outputs for a product in the
manufacturing process of this product, over a specified time period
3.2
product batch
identified collection of products, manufactured consecutively or continuously under the same
conditions, using the same materials conforming to the same specification
Note 1 to entry: The product batch is defined and identified by the product manufacturer.
3.3
representative product batch
product batch assumed to have the same characteristics as the production sampled when the latter is
considered as a homogeneous whole
4 Principle
For a defined product batch manufactured in a defined production unit, this method, supported by rules
described in Clause 6, consists of:
a) the quantification of the inputs, by dry mass, of the materials used for producing the bio-based
product under consideration;
b) the quantification of the losses, by dry mass, in the production unit, for each lost material, if any;
c) the quantification of the output(s), by dry mass, and
d) the calculation of the bio-based content from these data.
The traceability system of the production unit provides necessary information and data to perform the
calculations.
This method requires that the bio-based content of each input and lost material for the defined product
batch in the production unit is known.
5 Natural products
It is not needed to apply this method for the determination of the bio-based content in natural products
wholly derived from biomass [e.g. wood (including pulp), flax, hemp, bamboo, sisal, coconut, rice].
The bio-based content of a natural product or constituent of a product is equal to 100 %.
6 Rules for allocation of elements
For a product or constituent of a product obtained by chemical synthesis, the following rule shall be
applied:
a) if the reactants are exclusively derived from biomass, the bio-based content of the product or
constituent of the product is 100 %;
b) if none of the reactants is derived from biomass, the bio-based content of the product or constituent
of the product is 0 %, and
c) if the reactants are derived from both biomass and non-biomass, the following convention applies:
If oxygen (O) and/or hydrogen (H) and/or nitrogen (N
...