BS ISO 16000‑28:2020 Indoor air Part 28: Determination of odour emissions from building products using test chambers

BS ISO 16000‑28:2020 Indoor air Part 28: Determination of odour emissions from building products using test chambers. 7 Test requirements 7.1 General Test conditions for the emission test chambers are described in ISO 16000-9 and further specified in EN 16516 and shall be met. The supply air shall L)e clean enough to ensure that the background requirements for the emission test chambers can be met (see 72). 7.2 Emission test chamber and test room background odour 7.2.1 Background odour The background odour of the air in the test room and of the emission test chamber including the sample presentation system and sample container shall be low in order to avoid influences on the odour assessment. The background odour of the emission test chamber including the sample presentation system and sample container shall be evaluated by the sensory odour panel (see 1Q2). The background odour (acceptability and perceived intensity) of the air in the recovery room and the test room including all equipment under working conditions shall be evaluated according to Iso 16000-30 before starting odour assessments for the first time. Both assessment results shall meet the requirements in Tables 1 or 21U11.14J. The odour evaluation in the test room should he repeated, if required (e.g. after construction works). 8 Odour testing from emission test chambers 8.1 General The standard procedure for odour assessment is carried out by using sample containers (see 6.3.3). Alternatively, direct assessment from the outlet of the emission test chamber is possible if sufficient air flow is assured (see 6.3.2) and it is provided that the results are comparable or correlate with the result of the standard procedure under the conditions applied. The validity of the correlation with the standard procedure is limited to the field of application for which it has been established. 8.2 Emission test chamber preparation The specifications given by ISO 16000‑9 and further specified in EN 16516 shall be considered. A background odour test shall be performed previous to any loading of the emission test chambers in order to confirm the efficiency of the cleaning step. The background odour test shall be performed exactly as the standard procedure except that no test specimen is introduced into the emission test chamber. The background odour shall conform with the requirement in 7.2.1 before proceeding with the preparation of the odour assessment of the test specimen. 8.3 Time of odour measurements The measurements shall be carried...