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. 2020 Jan-Mar;11(1):13–19. doi: 10.4103/japtr.JAPTR_85_19

Table 1.

32 full factorial design levels and factors

Independent variables Levels
−1 0 1
X1 (THCl: EC ratio, w/w) 1:1 1:2 1:3
X2 (stirring rate, rpm) 2000 4000 6000

THCl: Terbinafine hydrochloride, EC: Ethyl cellulose