 One of those conditions concerned the bleaching process, described by the minister as "elemental chlorine free" or ECF.Dr Karen Stack, a part-time lecturer and researcher in the School of Chemistry at the University of Tasmania,
states an ECF system uses chlorine dioxide instead of chlorine to bleach the pulp, which greatly reduces the levels of organochlorines that make it out into the environment through effluent released from a pulp mill.She describes this system a more environmentally friendly process.