Construction products - Assessment of release of dangerous substances - Determination of emissions into indoor air of ammonia from cellulose insulation at 90 % RH

This Technical Report specifies a method for the determination of ammonia from cellulose insulation products at 90% relative humidity (RH).
This document is based on the existing prEN 16516 standard which provides an horizontal reference method for the determination of emissions of regulated dangerous substances from construction products into indoor air.

Bauprodukte - Bewertung der Freisetzung gefährlicher Stoffe - Bestimmung der Ammoniakemissionen von Zellulosedämmstoffen bei einer relativen Luftfeuchtigkeit von 90%

Produits de construction - Évaluation de l'émission de substances dangereuses - Détermination des émissions d'ammoniac dans l'air intérieur provenant des isolants cellulosiques à 90 % HR

Le présent document spécifie une méthode de détermination des émissions d’ammoniac par les isolants en ouate de cellulose dans l’air intérieur à 90 % d’humidité relative (HR). Il repose sur l’utilisation d’une chambre d’essai d’émission et sur l’analyse ultérieure de l’ammoniac dans l’air de la chambre d’essai.

Gradbeni proizvodi - Ocenjevanje sproščanja nevarnih snovi - Določevanje emisij amoniaka iz celuloznih izolacijskih materialov v notranji zrak pri 90 % relativni vlažnosti

To tehnično poročilo določa metodo za določevanje amoniaka iz celuloznih izolacijskih materialov pri 90 % relativni vlažnosti.
Ta evropski standard temelji na obstoječem standardu prEN 1651, ki vsebuje horizontalno referenčno metodo za določevanje emisije reguliranih nevarnih snovi iz gradbenih proizvodov v notranji zrak.

General Information

Status
Published
Public Enquiry End Date
30-Sep-2018
Publication Date
30-Jan-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
20-Nov-2018
Due Date
25-Jan-2019
Completion Date
31-Jan-2019

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SLOVENSKI STANDARD
SIST-TP CEN/TR 17304:2019
01-marec-2019
*UDGEHQLSURL]YRGL2FHQMHYDQMHVSURãþDQMDQHYDUQLKVQRYL'RORþHYDQMHHPLVLM

DPRQLDNDL]FHOXOR]QLKL]RODFLMVNLKPDWHULDORYYQRWUDQML]UDNSULUHODWLYQL

YODåQRVWL

Construction products - Assessment of release of dangerous substances - Determination

of emissions into indoor air of ammonia from cellulose insulation at 90 % RH
Bauprodukte - Bewertung der Freisetzung gefährlicher Stoffe - Bestimmung der

Ammoniakemissionen von Zellulosedämmstoffen bei einer relativen Luftfeuchtigkeit von

90%
Produits de construction - Évaluation de l'émission de substances dangereuses -

Détermination des émissions d'ammoniac dans l'air intérieur provenant des isolants

cellulosiques à 90 % HR
Ta slovenski standard je istoveten z: CEN/TR 17304:2018
ICS:
13.020.99 Drugi standardi v zvezi z Other standards related to
varstvom okolja environmental protection
91.100.60 0DWHULDOL]DWRSORWQRLQ Thermal and sound insulating
]YRþQRL]RODFLMR materials
SIST-TP CEN/TR 17304:2019 en

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

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CEN/TR 17304
TECHNICAL REPORT
RAPPORT TECHNIQUE
November 2018
TECHNISCHER BERICHT
ICS 91.100.60
English Version
Construction products - Assessment of release of
dangerous substances - Determination of emissions into
indoor air of ammonia from cellulose insulation at 90 %

Produits de construction - Évaluation de l'émission de Bauprodukte - Bewertung der Freisetzung gefährlicher

substances dangereuses - Détermination des émissions Stoffe - Bestimmung der Ammoniakemissionen von

d'ammoniac dans l'air intérieur provenant des isolants Zellulosedämmstoffen bei einer relativen

cellulosiques à 90 % HR Luftfeuchtigkeit von 90%

This Technical Report was approved by CEN on 5 November 2018. It has been drawn up by the Technical Committee CEN/TC

351.

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. CEN/TR 17304:2018 E

worldwide for CEN national Members.
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Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 6

3.1 Terms relating to sampling and products .............................................................................................. 6

3.2 Terms relating to emissions into indoor air and associated laboratory testing ...................... 7

3.3 Terms relating to determination of emitted substances .................................................................. 9

4 Intended conditions of use, emission scenarios and European reference room ..................... 9

4.1 Intended conditions of use and emission scenario ............................................................................. 9

4.2 Reference room and emission scenario .................................................................................................. 9

4.2.1 General ................................................................................................................................................................ 9

4.2.2 Dimensions and loading factors in the reference room ................................................................. 10

4.2.3 Ventilation in the reference room.......................................................................................................... 11

4.2.4 Climate conditions in the reference room .......................................................................................... 11

4.3 Time schedule of emission(s) determination .................................................................................... 11

5 Product sampling and transport to the laboratory ......................................................................... 11

6 Handling of product samples in the laboratory ................................................................................ 12

6.1 Storage of sample in the testing laboratory ....................................................................................... 12

6.2 Preparation of the test specimen ........................................................................................................... 12

7 Test chamber conditions ........................................................................................................................... 12

7.1 Principles ........................................................................................................................................................ 12

7.2 Dimensions of test specimen ................................................................................................................... 13

7.3 Loading factor ................................................................................................................................................ 13

7.4 Ventilation ...................................................................................................................................................... 13

7.5 Air velocity ...................................................................................................................................................... 13

7.6 Cleanliness of test chamber ...................................................................................................................... 13

7.7 Testing climate (temperature, relative humidity of supply air) ................................................. 13

7.8 Storage of test specimen ............................................................................................................................ 14

7.9 Large products .............................................................................................................................................. 14

7.10 Volume of test chamber ............................................................................................................................. 14

7.11 Placement of test specimen in test chamber ...................................................................................... 14

8 Determination of ammonia in test chamber air ............................................................................... 15

9 Calculation of specific emission rates and expression of results at the reference

room .................................................................................................................................................................. 15

10 Reporting for the reference method ..................................................................................................... 17

10.1 General ............................................................................................................................................................. 17

10.2 Sampling .......................................................................................................................................................... 17

10.3 Handling of samples in the laboratory, preparation of test specimen ..................................... 17

10.4 Test chamber conditions ........................................................................................................................... 17

10.5 Determination of ammonia in test chamber air ............................................................................... 17

11 Indirect methods .......................................................................................................................................... 18

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Annex A (informative) Examples of indirect methods (also called simplified, screening,

secondary, derived or alternative methods) ...................................................................................... 19

A.1 General ............................................................................................................................................................. 19

A.2 Indirect methods‐emissions testing ...................................................................................................... 19

Bibliography ................................................................................................................................................................. 20

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European foreword

This document (CEN/TR 17304:2018) has been prepared by Technical Committee CEN/TC 351

“Construction products: Assessment of release of dangerous substances”, the secretariat of which is held

by NEN.

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.

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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Introduction

This document was developed under the remit of Commission Regulation (EU) 2016/1017 of

23 June 2016 amending Annex XVII to Regulation (EC) No 1907/2006 of the European Parliament and of

the Council concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)

as regards inorganic ammonium salts [1].

This document is derived from the horizontal standard EN 16516 [2] which specifies the horizontal

reference method for testing the emission (release) of dangerous substances from construction products

into indoor air.

This method uses a test chamber in which emissions are generated under conditions which are kept

constant during the test.
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1 Scope

This document specifies a method for the determination of emissions of ammonia from cellulose

insulation products into indoor air at 90 % relative humidity (RH). It is based on the use of an emission

test chamber and subsequent analysis of ammonia in test chamber air.
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.

EN 16687, Construction products - Assessment of release of dangerous substances - Terminology

3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 16687 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1 Terms relating to sampling and products
3.1.1
laboratory sample
sample or sub-sample(s) sent to or received by the laboratory

Note 1 to entry: The laboratory sample is the final sample from the point of view of sample collection but it is the

initial sample from the point of view of the laboratory.
[SOURCE: IUPAC, 2.5.5 [3]]
3.1.2
population
totality of products under consideration
[SOURCE: adapted from ISO 11074:2005, 4.1.11 as in CEN/TR 16220:2011, 2.4.3 [4]]
3.1.3
sample

representative portion of product or material selected from a larger quantity of product or material

[SOURCE: IUPAC, 2.1.1 [3]]
3.1.4
sampling plan

predetermined procedure for the selection, withdrawal, preservation and transportation of product

samples
[SOURCE: CEN/TR 16220:2011, 2.3 [4]]
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3.1.5
scale

minimum quantity (mass, volume or units) of the product for which representative test results can be

obtained
[SOURCE: CEN/TR 16220:2011, 2.4.4 [4]]

3.2 Terms relating to emissions into indoor air and associated laboratory testing

3.2.1
air change rate

ratio of the volume of air brought into the test chamber per hour and the volume of the empty test

chamber
Note 1 to entry: Air change rate is expressed as h .
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.1 [5]]
3.2.2
air flow rate ventilation rate
air volume entering into the emission test chamber per unit of time
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.2 [5]]
3.2.3
chamber blank value

test result obtained by carrying out the test procedure in the absence of a test portion/specimen

3.2.4
emission

liberation of chemical substances (ammonia) from a construction product (cellulose insulation product)

into air
3.2.5
emission test chamber

enclosure with controlled operational parameters for the determination of vapour phase organic

compounds emitted from construction products
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.6 [5]]
3.2.6
emission test chamber concentration

mass concentration of ammonia in test chamber air measured at the emission test chamber outlet

[SOURCE: EN ISO 16000-9:2006+AC:2007, 3.7 [5]]
3.2.7
intended conditions of use

conditions that a product is expected to experience during service life and that influence its emission

behaviour
3.2.8
mass concentration of the compound in the reference room air
calculated concentration of ammonia in the reference room
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3.2.9
product loading factor
ratio of exposed dimension of the test specimen to the empty test chamber volume
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.8 [5]]
3.2.10
product coverage
ratio of mass of the insulation product per unit area
[SOURCE: adapted from EN 15101-1:2013, 3.1.7 [6]]
3.2.11
reference room

room with specified dimensions, climate and ventilation used as a reference for calculating and reporting

product emissions, assuming inert surfaces
Note 1 to entry: In EN 16516:2017 [2], a reference room is specified in 4.2.

Note 2 to entry: The reference room serves as a convention and is a model that does not represent a real room.

3.2.12
specific air flow rate
ratio of air change rate and product loading factor

Note 1 to entry: Specific air flow rate can be expressed as the area specific air flow rate qA, equivalent to ratio of

3 2

the air flow rate and the surface area of the test specimen in [m /m *h], which is equivalent to the expression [m/h].

3 3

Note 2 to entry: Specific air flow rates can alternatively be volume specific (q expressed in m /(m *h)), length

3 3

specific (q expressed in m /(m*h)), mass specific (q expressed in m /(kg*h)), or unit specific (q expressed in

L m u
m /(unit*h)).
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.4 [5]]
3.2.13
specific emission rate SER (emission factor)

mass of ammonia per unit of product per unit of time at a given time from the start of the test

Note 1 to entry: This definition is intended to avoid confusion between the terms q (in 3.1.2.13) and qx with a

subscript (qA, qL, qv, qm, qu used for specific air flow rate in EN ISO 16000-9). The specific emission rate can be

2 3

related to area, length, volume, mass or unit, expressed as SERA in µg/(m *h), SERL in µg/(m*h), SERV in µg/(m *h),

SERm in µg/(kg*h), or SERU expressed in µg/(u*h).
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.11 [5]]
3.2.14
test portion

quantity or volume removed from the test sample for analysis purposes, generally of known weight, area

or volume
[SOURCE: IUPAC, 2.5.7 [3]]
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3.2.15
test sample

sample, prepared from the laboratory sample from which test portions are removed for testing or for

analysis
[SOURCE: IUPAC, 2.5.6 [3]]
3.2.16
test specimen

test portion specially prepared for emission testing in an emission test chamber in order to simulate the

emission behaviour of the product under testing conditions
[SOURCE: adapted from EN ISO 16000-9:2006+AC:2007, 3.13 [5]]
3.3 Terms relating to determination of emitted substances
3.3.1
limit value
numerical limit derived from national, European or contractual provisions
4 Intended conditions of use, emission scenarios and European reference room
4.1 Intended conditions of use and emission scenario

The intended conditions of use describe the purpose, place and circumstances of typical application(s) of

a construction product as defined in a product standard. This includes the intended use, (e.g. for what

purpose, how the product typically is installed, etc.), and an emission scenario.

When determining emission into indoor air, the emission scenario specifies the climate and ventilation

conditions of the air surrounding the product in the reference room. The actual condition(s) of use in

reality may be different. It is not possible to evaluate emissions under all possible use scenarios.

Therefore, this document specifies a set of conditions, such that all cellulose insulation products can be

evaluated under comparable conditions.

These defined conditions assume a standardized installation of the product in the reference room with

standardized dimensions, climate and ventilation.
4.2 Reference room and emission scenario
4.2.1 General

In this document, only one reference room and one set of conditions are specified and used as

conventional references for any specification of emission rates and any calculation of the related

concentrations of ammonia in indoor air.

If any piece of legislation or a particular application of the test requires a different reference room then

the results may be transformed by calculations within the ranges where such calculations are valid

(see Clause 7 and Clause 9).

The reference room serves as a convention and is a model that does not represent a real room.

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4.2.2 Dimensions and loading factors in the reference room
The dimensions of the reference room are listed below:
— the walls are 2,5 m high;
— floor and ceiling both measure 3 m × 4 m resulting in surfaces of 12 m each;
— there is one door of 0,8 m (width) × 2 m (height) (1,6 m );
— there is one window of 2 m .
2 3

The total wall area (minus door and window) is 31,4 m . The total air volume is 30 m .

Using those dimensions, following loading factors (L) in the reference room are calculated, depending on

the product types:
2 3
— 1,0 m /m – walls;
2 3
— 0,4 m /m – floor, ceiling;

Products standards or European Assessment Documents (EAD) relevant for cellulose insulation products

do not specify loading factors L, using these reference room dimensions.

Cellulose insulation products can be used in open blow applications, which are horizontal applications

where the final surface of the installed products remains uncovered (e.g. in attics), or in cavity

applications where the installed insulation product is created in an enclosed space (e.g. frame wall, floor,

etc.).

For the characterization of ammonia emissions from cellulose insulation products, two loading factors

(L) can be used:
2 3
— 1,0 m /m – walls: for applications corresponding to wall insulation;
2 3

— 0,4 m /m – floor, ceiling; for application to floor, ceiling or attics insulation.

If a cellulose insulation product can be used for both wall and floor or ceiling applications, it should be

2 3
tested with the highest loading factor: L = 1, 0 m /m .

Depending on the thermal conductivity (λD, in W/m.K) and on the density of the insulation product (k, in

kg/m ), the producer declares a range of minimal insulation thicknesses corresponding to the range of

declared thermal resistances (R, in m .K/W).

For a relevant comparison of product emissions, testing should be performed under one specified

condition of installed product thickness and density. Three specific testing conditions are described

below for open blow applications and cavity applications.

For open blow applications, testing conditions specified in the restriction report [7] for which the

emission limit value has been determined are recommended:
— density = 40 kg/m ;
— product thickness = 0,30 m.
This results in an installed product coverage of 12 kg/m .

Depending on the product characteristics declared by cellulose insulation producers, those values

correspond to a thermal resistance in the range 7,00 – 8,00 m .K/W.
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For cavity applications, testing conditions specified below are recommended:
— density = 50 kg/m ;
— product thickness = 0,25 m.
This results in an installed product coverage of 12,5 kg/m .

Depending on the product characteristics declared by cellulose insulation producers, those values

correspond to a thermal resistance in the range 5,00 – 6,00 m .K/W.
Table 1
Applications Emission Loading factor L Density Product Installed
scenario 2 3 [kg/m ] thickness coverage
[m /m ]
[m] [kg/m ]
Open blow Attics 0,4 40 0,30 12
Cavity Floor, ceiling 0,4 50 0,25 12,5
Cavity Walls 1,0 50 0,25 12,5

If the above recommended product density, thickness and resulting coverage do not represent the

intended conditions of use for a specific product, the product TC should specify corresponding values.

The test report should clearly mention the emission scenario and the product density and thickness

simulated during the test.
4.2.3 Ventilation in the reference room
/h) for the reference

The rate of ventilation with fresh air is specified at 0,5 air changes per hour (15 m

room. This is considered, by convention to represent, normal indoor air conditions.

NOTE 1 Real air change rates can deviate significantly from 0,5 air changes per hour.

NOTE 2 In Clause 9, a calculation formula is given for recalculation of a test result (when expressed as

concentration in air) to another air change rate within a valid range.
4.2.4 Climate conditions in the reference room

The climate conditions, i.e. 23 °C and 90 % relative humidity, should be applied to the reference room.

4.3 Time schedule of emission(s) determination

Ammonia emissions from cellulose insulation products should be tested for at least 14 days after

installation of the test specimen in the test chamber. Ammonia should be measured in test chamber air

at least once per working day throughout the test.
5 Product sampling and transport to the laboratory

Product sampling and transport requirements specified in Clause 5 of EN 16516:2017 [2] can apply to

this document.
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6 Handling of product samples in the laboratory
6.1 Storage of sample in the testing laboratory

The sample should be kept in its package and stored at normal indoor conditions during any period of

storage.

a) Samples should be protected from intense light, exposure to chemicals and mechanical damage.

b) Cleaners, solvents or other volatile chemicals should not be stored close to the sample if there is a

risk of contamination that could interfere with emission testing.
6.2 Preparation of the test specimen

The test specimen may be prepared in the laboratory or at the sampling site depending on the nature of

the product and on the requirements of the relevant product standard.

The relevant requirements of EN ISO 16000-11 [8] could be applied except for the deviations and

additional recommendations below:

a) The preparation of the test specimen should take place in a clean environment, and any tools used

should be clean.

b) When possible and necessary, adjust the size of the test specimen in accordance with 4.2.2 and

Clause 7 of this document. The specimen should remain representative of the sample in intended use

when performing any such adjustment.

c) As for other insulation products, cellulose insulation products can be tested as if they had one surface

in direct contact with indoor air.

d) For cellulose insulation products, the most convenient way to prepare a test specimen is to use an

open mould with dimensions (surface, thickness) representative of the emission scenario and of the

test chamber size. This open mould should be free of ammonia emissions (see recommendations of

chamber blank value in 7.6).

The use of a blowing machine for sample preparation is not recommended in this document.

Adequate mixing of the product to be tested (cellulose and additive) is necessary for the preparation of a

homogeneous test specimen

A microbiological contamination of the material prior to arrival in the testing laboratory cannot be

excluded. Therefore the product has to be carefully checked before introduction of the test specimen in

the emission test chamber.
7 Test chamber conditions
7.1 Principles

A ventilated test chamber can be used for generating emissions from the test specimen under constant

controlled conditions. In general, the test chamber parameters are kept as close as possible to those

specified in 4.2.2 for the reference room, but deviations are accepted within a narrow range as specified

below in all paragraphs of Clause 7.

Generation of emissions from a test specimen in a test chamber should be performed as specified in

EN ISO 16000-9 [5] and EN 16516 [2].

NOTE Most test chambers are smaller than the reference room and can be thought of as a scaled down model

of the reference room.
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7.2 Dimensions of test specimen

The dimensions of the test specimen can be appropriate to the size of the considered test chamber and

the product loading factor L as specified for the reference room in 4.2.2. The test specimen should be

large enough to be at least as representative as the laboratory sample (see 7.9 and 7.10).

7.3 Loading factor

The loading factor in the test chamber may deviate from the values given in 4.2.2 for the reference room,

within a narrow range. It should not be below 50 % or above 200 % of the specified loading factor and

2 3

should not exceed 2,0 m /m . For exceptions, see 7.9. Within this interval, the specific emission rate

remains constant and test results given in terms of specific emission rate do not need any conversion.

However, any test result reported in terms of concentration in the air of the reference room should be re-

calculated using the formulas given in Clause 9.

NOTE Measurements at lower loading factors or at the highest ventilation rate might have unacceptable high

uncertainty and be at the borderline for determination/quantification.
7.4 Ventilation

The ventilation (air change rate) in the test chamber may deviate from the specified value for the

reference room (see 4.2.3). It should not be lower than 0,25 air changes per hour and not higher than

2,0 air changes per hour. Within this interval, the specific emission rate is considered as remaining

constant and test results presented in terms of specific emission rate do not need any conversion.

However, any test result reported in terms of air concentration in the reference room should be re-

calculated for 0,5 air changes per hour using the formulae given in Clause 9. Variation of the air change

rate during the testing period should not exceed ± 5 %, as specified in EN ISO 16000-9 [6].

7.5 Air velocity

The air velocity above the test specimen should be in the range 0,1 m/s to 0,3 m/s.

7.6 Cleanliness of test chamber

The test chamber (including the empty mould used for test specimen preparation, if relevant) and the

supply air should be clean. According to this document, the test chamber can be considered as clean if the

background ammonia concentration is below 0,3 ppm (10 % of the limit value).
7.7 Testing climate (temperature, relative humidity of supply air)
The temperature inside the chamber and the rela
...

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