Table 1.

Optimizing a suitable sample concentration method.

Condition	Amicon	Centricon	Macrosep	Vivaspin	PEG 8000
Loading volume (mL)	15, 30	50, 100	20, 40	20, 40	90
Concentrate volume (mL)	1	1.5	1	1	1.5
Molecular weight cut-off (MWCO) (kDa)	10, 50	30, 100	30, 100	50, 100	–