Foreword	 1 Scope	 2 Normative References	 3 Principle	 4 Reagents	 5 Apparatus	 6 Preparation of standard solution and calibration	 7 Preparation and conditioning of test specimens	 8 Procedure	 9 Calculation and expression of the results	 10 Test report	 Annex A (Normative) Standardization of formaldehyde stock solution	 Annex B (Normative) Standardization formaldehyde stock solution--- iodimetry	 Annex C (Informative) Information on accuracy of the method	
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