Table 1

Sterilization period	Carrier materials	Result
50 min	PVDF from Millipore	All positive in a total of 10 samples
	PS from Millipore	All negative in a total of 10 samples
	PS from Nihon Pall	All negative in a total of 10 samples
	PS from Sartorius	All negative in a total of 10 samples
20 min	PS from Sartorius	All positive in a total of 10 samples
	PS from Nihon Pall	Two negative samples in 10 samples
	PC from Millipore	Six negative samples in 10 samples
	PS from Millipore	All negative in a total of 10 samples

Sterilization condition:ozone gas concentration 3000ppm, relative humidity (RH) 80%, temperature 35^°C, microorganism G. stearothermophilus ATCC 7953, 2.4 x 10³ CFU/sheet PVDF: polyvinylidene difluoride, PS: polysulfone, PC: polycarbonate

Table 1: Results from sterilization obtained by use of a biological indicator (BI).