At the Austrofoma, 11 chips samples of different wood chipper were tested for their fines. The available raw material (stem wood, hardwood) was largely the same. The result showed clearly: the Biber 92 profiled under the blower machines as a market leader.
Please find the entire article to the fines in the ökonergie No. 88/2012 on page 25.
Here you can download the article: https://www.biomasseverband.at/wp-content/uploads/OE_88_Beleg_PDF_1_.pdf