carton/paper board, for air fresheners  with both side bleached   - in range from 0,90 mm / 380 gsm to 1.7 mm / 720 gsm,   - density 410 - 425 kg/m3 ,   - surface strength 16,   - moisture content 8 %,   - water absorbency 30 s/ml,   - brightness on bleached side 85 % ISO,   - ph-level 5.5 - 6.5 %, of course we are interested to have more or less absorbency degrees for the carton paper