The refining,forming and pressing of the activated fibres were divided into
four major trials denoted RA, RB, and RC (Table 2). Trial RDwas
only used to produce fibres for evaluation of the fibre properties
and was produced without the addition of chemicals
during refining. The reference straw MDF/HDF (SMDF) in trial
RE had been produced in an earlier investigation (Halvarsson
et al., 2008).