TY - GEN A1 - Horn, Wolfgang T1 - Evaluation of material emissions for museum equipment – BEMMA-Scheme N2 - Museums worldwide are equipped with different display cases. Exhibit display cases should protect cultural objects from dust as well as from mechanical and physical damage. To ensure a stable climate inside the display cases, a low air exchange rate is maintained. Typically air exchange rates are often smaller than 0.1 d 1, which can result in rising concentrations of potential harmful immissions inside of the display cases due to emissions from materials. Especially high concentrations of organic acids, which can emit from e.g. sealing materials, can produce damage of cultural objects. In 2012 BAM introduced a procedure witch is called: BEMMA-Scheme (Bewertung von Emissionen aus Materialien für Museumsausstattungen) which stands for: “Assessment of Emissions from Materials for Museum Equipment”. Micro chambers are used for VOC emission tests of display case construction materials, e.g. textiles, plastics, sealing material, coatings and others. Each sampling procedure is carried out in duplicate. Emissions like formic acid, acetic acid, formaldehyde and oximes are excluded and the sum of emissions of VVOCs, VOCs and SVOCs is limited. For a positive assessment all listed criteria must be fulfilled; otherwise the display construction material fails the BEMMA scheme. The BEMMA scheme is not a guarantee for an emission free display case, but a necessary requirement for the choice of suitable materials for emission and immission reduced display cases. The basic evaluation for the values used for first assessments were a ZIM-project with nearly 100 tested materials. In-between more than 100 new materials were tested and enlarged the knowledge about material emissions from display case materials. Mainly silicone sealing materials were tested due to the fact that this group of material have the highest emissions. With regard to the testing procedure only construction materials were evaluated, not the display cases their self. Nevertheless in combination with the certificate also designed by BAM additionally the further steps of construction can be taken into account. So other factors such as age and storage time of materials, tightness respectively air change rate, air condition or ventilation of display cases can be included in the evaluation. T2 - Airmon: 9th International Symposium on Modern Principles of Air Monitoring and Biomonitoring CY - Dresden, Germany DA - 11.06.2017 KW - Display cases KW - BEMMA KW - Museum KW - Emission KW - VOC PY - 2017 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/41937 AN - OPUS4-41937 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany