TEST REPORT - Ursa

File number: 12/5203-878 Page number: 109.- RESULTSSound absorption in accordance with UNE-EN ISO 354:20049/LE766URSA IBÉRICA AISLANTES, S.A.Sound abs. coefficient, α STest specimen: Freq. (Hz) α sURSA Air Zero A2, 25 mm mineralwool panels coated with an aluminium–glass fiber fabric on one face and with ablack glass fiber fabric on the other face.Tested with 37 cm cavity1,21,110,90,80,70,60,50,40,30,2100125160200100 0,34125 0,38160 0,42200 0,46Sound absorption coefficient, α S250 0,5125031540050063080010001250160020002500315040005000Hz315 0,62400 0,72500 0,71630 0,74800 0,851000 0,961250 0,991600 1,042000 1,082500 1,093150 1,094000 1,055000 1,03Practical sound absorption coefficient, α p1,21,110,90,80,70,60,50,4Sound abs. coef.0,3Ref. shifted.0,2Hz125 250 500 1000 2000 4000Practical soundabsorption coef., α pFreq. (Hz)α p125 0,40250 0,55500 0,751000 0,952000 1,004000 1,00Weighted sound absorption coefficient, α W = 0,80 (H)Sound absorption class: BIt is highly recommended to use the single number "weighted sound absorption coefficient (α w )" together withfrequency-dependent values of sound absorption coefficient.The results reported in this document relate only to the sample, product or item delivered to LGAI Technological Center theappointed day having been tested under the conditions established in this document.