Different instrument Different analyst
  R.S.D.% X±S.D R.S.D.% X±S.D
  Bu- BTB
Pure Bu -HCl ( 10 µg mL-1)
Buspar 10 mg per tablet ( 10 µg mL-1)
Spiked urine sample( 10 µg mL-1)
-
1.62
2.10
1.73
-
9.90±0.16
10.1±0.21
9.83±0.17
-
1.84
1.90
2.04
-
9.79±0.18
9.99±0.19
9.79±0.20
Bu-BPR
Pure Bu -HCl ( 10 µg mL-1)
Buspar 10 mg per tablet ( 10 µg mL-1)
Spiked urine samples( 10 µg mL-1)
-
1.11
1.29
1.23
-
9.92±0.11
10.05±0.13
9.73±0.12
1.42
1.57
1.84
-
9.87±0.14
10.20±0.16
9.79±0.18
Bu - PA
Pure Bu -HCl ( 10 µg mL-1)
Buspar 10 mg per tablet ( 10 µg mL-1)
Spiked urine samples( 10 µg mL-1)

-
1.01
1.70
1.42  

-
9.87±0.10
10.0±0.17
9.85±0.14
0.82
1.50
1.21
-
9.73±0.08
9.97±0.15
9.93±0.12
Bu –AR
Pure Bu -HCl ( 10 µg mL-1)
Buspar 10 mg per tablet ( 10 µg mL-1)
Spiked urine samples( 10 µg mL-1)
-
0.91
1.29
1.92
-
9.89±0.09
10.11±0.13
9.9±0.19
-
2.12
1.09
1.52
-
9.91±0.21
10.07±0.11
9.84±0.15
Table 3: The results of analysis of Bu-HCl obtained by two different analyst and instrument (n = 6)