Free hand translation of the test report of the Federal Material Testing Institutite Nordrhein Westfalen, 44287 Dortmund, Germany (MPA NRW): Test certificate No. 120371 9 93 dtd. Nov. 02, 1993 The test configuration can be gathered from the picture below Test bench: (circulating water) Test pressure: (circulating water) Fire generation: Temperature cycle rig, model 1336 5 bar, water temperature 80°C LPG burners (10 burners spread over a length of approx. 360 mm) Fire temperature: approx. 800°C (with thermo couple) Measured next to test object Duration of the test: 30 min Test results: During the 30 minute test duration no visual leakages could be observed with all of the three test filters. MPA NRW
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