Table 2.

Repeatability and accuracy of the quantitative determination of 14 active pharmaceutical ingredients with the TLCyzer app. The results of all 168 individual measurements are displayed graphically in Fig. 3, and their numerical values are listed in Supplementary Table S2.

API	Conc. (%)	Mean (%) (n = 4)	SD (%) (n = 4)	Relative SD [%] (n = 4)	Relative SD [%] (n = 12)	Recovery mean (n = 4) [%]
Atenolol	70	72.5	0.59	0.81	2.33	103.5
	85	85.9	1.59	1.85		101.1
	90	91.7	3.97	4.33		101.8
Ceftriaxone	70	70.1	3.99	5.68	3.50	100.2
	85	84.1	1.00	1.18		99.8
	90	90.4	3.31	3.63		101.3
Cefuroxime axetil	70	72.0	3.09	4.29	3.70	102.9
	85	82.3	2.13	2.59		96.8
	90	90.5	3.82	4.23		100.5
Chloroquine	70	68.7	0.93	1.36	1.59	98.1
	85	85.5	0.95	1.11		100.5
	90	91.9	2.11	2.30		102.1
Ciprofloxacin	70	69.8	1.93	2.77	3.34	99.7
	85	84.7	3.53	4.17		99.6
	90	92.5	2.86	3.09		102.8
Dexamethasone	70	67.5	2.75	4.08	2.92	96.4
	85	85.2	2.07	2.43		100.3
	90	92.1	2.08	2.26		102.3
Fluconazole	70	70.4	1.68	2.39	2.40	100.6
	85	84.3	1.54	1.82		99.1
	90	89.1	2.68	3.01		99.0
Furosemide	70	70.3	1.82	2.59	2.28	100.5
	85	85.1	2.20	2.58		100.1
	90	92.6	1.54	1.66		102.8
Glibenclamide	70	68.5	2.04	2.98	3.17	97.9
	85	83.0	4.34	5.23		97.6
	90	90.6	1.17	1.29		100.6
Hydrochloro-thiazide	70	70.8	1.27	1.80	1.98	101.2
	85	85.5	1.24	1.45		100.6
	90	90.9	2.46	2.70		101.0
Metformin	70	72.0	3.45	4.80	3.21	102.8
	85	83.7	1.94	2.32		98.5
	90	89.1	2.25	2.53		99.0
Metronidazole	70	69.2	2.38	3.44	2.33	98.8
	85	85.0	0.66	0.77		100.0
	90	90.0	2.50	2.77		100.0
Sulfamethoxazole	70	70.1	3.38	4.82	3.84	100.2
	85	87.4	2.91	3.33		102.8
	90	93.5	3.17	3.39		103.9
Trimethoprim	70	68.6	1.53	2.22	2.48	98.0
	85	84.0	2.86	3.41		98.8
	90	88.2	1.61	1.82		97.9
Mean				2.79		100.3