Screening of Concentration and Antimicrobial Effectiveness of Antimicrobial Preservative in Betastatin Besylate Nasal Spray

Table 1

Assessment criteria for antimicrobial effectiveness of nasal preparation.

		Reduced log value
		2 d	7 d	14 d	28 d
Bacterial	A	2	3	—	NI
	B	—	—	3	NI
Fungus	A	—	—	2	NI
	B	—	—	1	NI

NI: no increase, indicating that the amount of test strain increased by no more than 0.5 log from the previous measurement time.