. 2009 Jan-Feb;71(1):30–34. doi: 10.4103/0250-474X.51949

TABLE 2.

DRUG EXCIPIENT INTERACTION BY HPTLC METHOD

Temperature	R_f values for different formulations

	F1	F2	F3	F4
Refrigerator	0.915	0.898	0.854	0.798
Room	0.886	0.895	0.873	0.796
40/75%	0.892	0.902	0.815	0.764
30/65%	0.854	0.887	0.912	0.782
25/60%	0.823	0.794	0.853	0.669