Skip to main content

Table 7 Precision of the proposed method

From: Screening of caffeine, preservatives and antioxidants in dairy products available in Bangladesh using an RP-HPLC method

Standards Spike levela (%) Intra–day (Mean ± %RSD)b Inter–day (Mean ± %RSD)b
CF 100 1865839 ± 0.71 1855736 ± 0.63
BA 100 986908 ± 0.50 982929 ± 0.56
PP 100 994208 ± 0.35 985310 ± 0.46
BP 100 858343 ± 0.43 852766 ± 0.76
BHA 100 216226 ± 0.80 213500 ± 0.86
BHT 100 234037 ± 0.94 214671 ± 0.69
  1. CF caffeine, BA benzoic acid, PP propylparaben, BP butylparaben, BHA butylated hydroxyanisole, BHT butylated hydroxytoluene
  2. aSpike level indicates the corresponding nominal concentration of each standard
  3. bAll determinants are in sextuplicate