Cupriethylenediamine disperse viscosity of pulp (falling ball method), Test Method T 254 cm-22
This method describes a rapid procedure (1, 2, 3) for the measurement of the viscosity of 1% cellulose solutions using cupriethylenediamine saturated with cupric hydroxide [Cu(OH)2] as the solvent. For convenience, this may be referred to as Cu(En)2 or CED.