TABLE 1.

Ultrafiltration processing of SSG-NIV formulation to produce SSG-NIV-dextran formulation^a

Starting vol (ml)	Vol (ml) of filtrate collected	Dextran vol (ml) added to formulation	Final Vol (ml)	Expected SbV concn (mg/ml) after dilution with dextran
700	450	250	500	13.5
500	200	100	400	10.125
400	150	100	350	7.232
350	100	150	400	4.52
400	50	350	400	2.26

^aA total of 700 ml of SSG-NIV (27 mg of Sb^V/ml) was processed to produce SSG-NIV-dextran. The expected Sb^V concentration at each step is shown.