WoodHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data: www. Isolith.com
Value from the PTB table, not verified
Isolith BABf three-layer sound absorber panel
Sound absorber panel – BABf 100 mm
PTB reference data
Original description
Isolith BABf three-layer sound absorber panel
Material properties
Manufacturer: Isolith M. Hattinger Ges.m.b.H.
Thickness: 3.9 in
Backing: mineral wool core
Surface: cement-bonded wood wool coating
Up to fire class: B1
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
1.00
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.85 | 1.00 | 1.00 | 1.00 | 0.85 | 0.75 |
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Value from the PTB table, not verified
NRC: 1.00 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 100 mm · 17 kg / m² · feine Wollstruktur | 1.00 | 0.85 | 1.14 | 1.06 | 1.05 | 0.83 | 0.74 |
Measured values as a table (1 measurement)
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