The system has been fully acoustically tested, in both Mistral, Soundwall and Flushwall variations, in UKAS accredited Acoustic laboratories to the procedures of ISO140/ISO717 and has demonstrated the following performance levels:

Mistral solid modules, empty cavity:
37dB RW, test report BGATR 1417

Mistral solid modules, incorporating a single layer of 25mm glassfibre blanket 16KG/M3:
43dB RW, test report BGATR 1418

Mistral solid modules, incorporating a single layer of 50mm Gypglas 60KG/M3:
46dB RW, test report BGATR 1419

Flushwall solid modules, empty cavity:
38dB RW, test report BGATR 1414

Flushwall solid modules, incorporating a single layer of 25mm glassfibre blanket 16KG/M3:
45dB RW, test report BGATR 1415

Flushwall solid modules, incorporating a single layer of 50mm Gypglas 60KG/M3:
46dB RW, test report BGATR 1416

Soundwall solid modules, incorporating a single layer of 25mm glassfibre blanket 16KG/M3:
47dB RW, test report BGATR 1453

Soundwall solid modules, incorporating a single layer of 40mm Rockwool 60KG/M3:
49dB RW, test report BGATR 1455

These figures indicate the performance of the Mistral system partition elements tested under strict laboratory conditions. They are only indicative of actual site performance. Due note should be taken of losses via flanking transmissions onsite, via

- ceiling voids
- floor voids
- trunking and ductwork
- fa蓷de transmission via window mullions