Semibleached or Bleached Nonconiferous Chemical Wood Pulp, Soda or Sulfate (Non-Dissolving)

Eucalyptus combines a fast plantation rotation cycle (typically 5–7 years), high yield per hectare, and favorable fiber morphology — short, uniform fibers with thin cell walls — that produce excellent sheet formation and softness in tissue. These agronomic and fiber characteristics give eucalyptus-based BHKP a cost and quality profile that has made it the benchmark hardwood grade in international pulp markets.

Tissue mills generally require high freeness (low drainage resistance) to achieve fast water removal on the tissue machine and good bulk. Typical Canadian Standard Freeness targets for tissue-grade BHKP range from roughly 500 to 650 mL, though exact specifications vary by machine design and product type. Suppliers provide freeness data on quality certificates, and deviations can affect machine runnability and product softness.