Quantitative Analysis of Resorcinol from Marketed Hair Tonic Using Liquid Chromatographic Technique

Table 2

System suitability and validation data for the estimation of RC from hair tonic preparation.

Parameters	Resorcinol
System suitability
Retention time (min)	3.78 ± 0.01
Capacity factor	1.54
Resolution	3.04
USP tailing factor	1.12
USP theoretical plates ()	6665.80
Sensitivity
Limit of detection (LOD) (g·mL^−1)	0.63
Limit of quantitation (LOQ) (g·mL^−1)	1.92
Precision
Intra-day
Repeatability (mg/100 mL) ( = 5) ± %RSD	45.80 ± 0.09
Inter-day
Mean resorcinol content from hair tonic preparation (mg/100 mL) (day 1/day 2/day 3) ( = 3)	45.68/45.41/45.08
(%RSD) (day 1/day 2/day 3) ( = 3)	0.01/0.08/0.02