Method Development for Simultaneously Determining Indomethacin and Nicotinamide in New Combination in Oral Dosage Formulations and Co-Amorphous Systems Using Three UV Spectrophotometric Techniques

Table 3

Data of the precision study of IND and NCT for the proposed methods.

Precision	IND RSD%			NCT RSD%
Method	ZCD2	DWD1	SS	ZCD2	DWD1	RS
Intraday day 1	1.49	0.97	0.35	1.21	0.89	0.61
Intermediate day 2	1.44	1.08	0.99	1.57	1.24	0.56
Intermediate day 3	1.37	1.23	1.09	1.66	1.28	0.63
Total repetitions	1.46	1.18	1.12	1.52	1.28	1.16

For each category, there are three concentrations and three repetitions for each concentration with a total of 27 repetitions.