Table 2.

Assay results of eye-drops sample.

Analytes	Chloramphenicol	Propylparaben	Methylparaben
Labeled amount	0.4% (32 mg/8 ml)	0.002% (0.16 mg/8 ml)	0.018% (1.44 mg/8 ml)
Average content (%, comparing to labeled amount, n = 6)	98.1	104.6	102.7
RSD of content (%)	1.0	1.2	1.3