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Materyèl Building lafimen Dansite tèsteur dapre Profile ASTM D2843 Product nan Materyèl Building lafimen Dansite tèsteur la tèsteur dansite lafimen pou materyèl bilding se devlope pa Rohm Company Haas nan Amerik pou kontwòl entèn yo. Li te devlope nan lane 1970 dapre estanda D2843 ASTM. baz teyorik li yo se lalwa Billumber a, se sa ki, lafimen an ki te pwodwi pa boule materyèl se dirèkteman afekte nan flanm dife, epi li se pénétration nan limyè kouvwi apre boule materyèl yo. se pri a depase Lè sa a, itilize detèmine valè a dansite lafimen (SDR). Koulye a, pi plis ak plis aplikasyon te pase nasyonal estanda GB nan 8624, pou tès la dansite lafimen nan PVC bwat, men tou, pou fè tès nan pèfòmans dansite lafimen nan materyèl enteryè otomobil.
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Building Material Smoke Density Tester according to ASTM D2843 Product Profile of Building Material Smoke Density Tester The smoke density tester for building materials is developed by Rohm Haas Company of America for internal control. It was developed in 1970s according to ASTM D2843 standard. Its theoretical basis is Billumber’s law, that is, the smoke produced by burning materials is directly impacted by flame, and the light penetration is shielded after burning materials. The excess rate is then used to determine the smoke density value (SDR). At present, more and more applications have passed the national standard GB 8624, for the smoke density testing of PVC casing, but also for the smoke density performance testing of automotive interior materials.