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Table 2 Intermediate precision values obtained using the methods for vitamin B1, B6, B2 and C analyses in PN

From: Chemical stability study of vitamins thiamine, riboflavin, pyridoxine and ascorbic acid in parenteral nutrition for neonatal use

  

80%

100%

120%

 

Day

ID RSD (%)

IT RSD (%)

ID RSD (%)

IT RSD (%)

ID RSD (%)

IT RSD (%)

B1

1

1.78

1.40

1.89

2.00

0.48

0.88

 

2

1.26

 

0.63

 

1.06

 

B6

1

0.63

0.90

1.68

1.55

0.41

1.96

 

2

1.01

 

0.95

 

0.98

 

B 2

1

0.40

1.18

1.09

1.59

1.08

1.61

 

2

1.17

 

0.67

 

0.90

 

C

1

0.71

1.46

0.57

1.33

0.43

0.56

 

2

0.69

 

0.55

 

0.43

 
  1. ID RSD means intraday relative standard deviation and IT RSD interday relative standard deviation of 3 measurements average in each day. n = 2 lots.