Forensic Discrimination Potential of Blue, Black, Green, and Red Colored Fountain Pen Inks Commercially Used in Pakistan, by UV/Visible Spectroscopy, Thin Layer Chromatography, and Fourier Transform Infrared Spectroscopy

Table 5

Calculated Rf values for blue, black, green and red inks using TLC.

Rf Values of Blue fountain pen Ink				Rf Values of Black fountain pen Ink								Rf Values of Green fountain pen Ink							Rf Values of Red fountain pen Ink
Blue Ink	Blue band	Sky Blue	Purple	Black Ink	Red	Light blue	Yellow	Orange	Light Brown	Dark purple	Light purple	Green Ink	Blue	Purple	Turquoise Green	Yellow	Sky blue	Light green	Red Ink	Red	Dark Pink	Yellow	Light yellow
BL1	0.03	0.19	0.34	BK1	0.08	-	0.15	-	0.30	-	-	GN1	0.19	0.37	-	-	0.4	-	RD1	0.09	0.2	0.67	0.71
BL2	0.12	0.19	0.34	BK2	-	0.11	0.28	0.19	-	-	-	GN2	-	-	0.30	0.25	0.07	-	RD2	0.11	0.42	0.67	-
BL3	0.03	0.20	0.34	BK3	0.03	-	0.47	-	0.33	-	-	GN3	0.19	0.37	-	0.30	0.37	0.26	-	-	-	-	-
BL4	0.05	0.20	0.34	BK4	0.08	-	-	0.64	-	0.39	-	GN4	-	-	0.30	0.05	-	-	-	-	-	-	-
BL5	0.03	0.20	0.34	BK5	0.08	-	-	0.67	-	0.42	0.22	-	-	-	-	-	-	-	-	-	-	-	-
BL6	0.03	0.14	0.34	BK6	-	-	-	0.69	-	0.42	-	-	-	-	-	-	-	-	-	-	-	-	-