ISO 16065-1

Gravimetric Tolerance

Analytical precision demands strict control over sample weight deviations during residue isolation phases. Technicians execute duplicate determinations on pulverized wood samples to maintain inter-laboratory repeatability thresholds. Temperature fluctuations inside drying ovens alter final mass readings and invalidate the residue fraction calculation.

Balance calibration frequency dictates the reliability of the reported cellulose percentage across commercial transaction documents.

Yield Verification

Pulp manufacturers rely on these standardized mass values to determine chemical charging rates in continuous digesters. Deviations in cellulose content alter caustic soda consumption and force mill operators to adjust cooking liquor concentrations. Commercial contracts for wood chip supply frequently reference this method to settle disputes over raw material quality and dry fibre content.

Accurate yield accounting prevents chemical under-dosing during the conversion process from raw biomass to bleached kraft pulp.