Table 4 Repeatability and precision “Inter precision (analyst to analyst)”.

From: Rapidly, sensitive quantitative assessment of thiopental via forced stability indicating validated RP-HPLC method and its in-use stability activities

Replicate #

Standard P.A

     

1

5931.4

     

2

5944.4

     

3

5943.1

     

4

5925.0

     

5

5940.2

     

6

5915.2

     

Mean P.A

5933.2

     

Weight (mg)

54.2

     

Assay (%)

85.75

     

Item

Analyst 1

P.A

Weight(mg)

Assay (%)

Analyst 2

P.A

Weight (mg)

Assay (%)

Determination-1

5931.1

54.2

85.7

5926.1

54.1

85.8

Determination-2

5991.3

54.3

86.4

5922.9

54.1

85.8

Determination-3

5986.4

54.3

86.4

5931.8

54.0

86.0

Determination-4

5994.4

54.2

86.6

5971.0

54.3

86.1

Determination-5

5937.4

54.2

85.8

6038.6

54.8

86.3

Determination-6

5921.9

54.1

85.7

5956.7

54.6

85.5

Assay mean (%)

86.1

85.9

Assay STDEV

0.40

0.31

Assay RSD (%)

0.47

0.36

Pooled assay (%)

86.0

Pooled STDEV

0.14

Pooled RSD (%)

0.16