Investigation and Discrimination of Ballpoint Pen Inks by Analytical Techniques and Chemometrics

Table 1

Samples of ballpoint pen inks of different colors and brands with sample codes.

Sr. No.	Blue		Black		Red		Green
	Ink sample	Sample code	Ink sample	Sample code	Ink sample	Sample code	Ink sample	Sample code
1	Sample 1	B1	Sample 1	K1	Sample 1	R1	Sample 1	G1
2	Sample 2	B2	Sample 2	K2	Sample 2	R2	Sample 2	G2
3	Sample 3	B3	Sample 3	K3	Sample 3	R3	Sample 3	G3
4	Sample 4	B4	Sample 4	K4	Sample 4	R4	Sample 4	G4
5	Sample 5	B5	Sample 5	K5	Sample 5	R5	Sample 5	G5
6	Sample 6	B6	Sample 6	K6	Sample 6	R6	Sample 6	G6
7	Sample 7	B7	Sample 7	K7	Sample 7	R7	—	—
8	Sample 8	B8	Sample 8	K8	Sample 8	R8	—	—
9	Sample 9	B9	Sample 9	K9	—	—	—	—
10	Sample 10	B10	Sample 10	K10	—	—	—	—
11	Sample 11	B11	Sample 11	K11	—	—	—	—
12	Sample 12	B12	Sample 12	K12	—	—	—	—
13	Sample 13	B13	Sample 13	K13	—	—	—	—
14	Sample 14	B14	Sample 14	K14	—	—	—	—
15	Sample 15	B15	Sample 15	K15	—	—	—	—
16	Sample 16	B16	Sample 16	K16	—	—	—	—
17	Sample 17	B17	Sample 17	K17	—	—	—	—
18	Sample 18	B18	Sample 18	K18	—	—	—	—
19	Sample 19	B19	Sample 19	K19	—	—	—	—
20	Sample 20	B20	—	—	—	—	—	—

B: blue color; K: black color; R: red color; G: green color.