EN 717-1:2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
   5.1 General
   5.2 Acetylacetone solution
   5.3 Ammonium acetate solution
   5.4 Formaldehyde standard solution
6 Apparatus
   6.1 Test chamber
   6.2 Air sampling system
   6.3 Equipment for chemical analysis
   6.4 Equipment for verification of air exchange rate
7 Test pieces
8 Procedure
   8.1 Test conditions
   8.2 Verification of test conditions
   8.3 Chamber preparation
   8.4 Preparation of test pieces
   8.5 Loading and starting procedure
   8.6 Air sampling and analysis
   8.7 Test duration
9 Determination of formaldehyde emission
   9.1 General
   9.2 Principle
   9.3 Procedure
   9.4 Calibration curve
   9.5 Calculation of the amount of absorbed formaldehyde
   9.6 Calculation of the formaldehyde emission
10 Determination of test result
11 Expression of results
12 Test report
Annex A (normative) Test chambers
Annex B (normative) Determination of air exchange rate
Annex C (normative) Determination of the steady-state
                      emission value
Annex D (informative) Analytical procedure for the
                      fluorimetric determination of
                      formaldehyde content
Bibliography

This European Standard specifies a chamber method with three options of test chambers for the determination of the formaldehyde emission from wood-based panels in terms of the steady-state concentration in a climate chamber under defined conditions, which relate to typical conditions in real-life. This chamber method can also be applied to the estimation of formaldehyde concentrations under various conditions in practice, by the use of mathematical models.