The document outlines the definition of repeatability in testing as the agreement between independent test results from the same method on identical materials by the same analyst and equipment over a short time. It states that an acceptable assessment includes a minimum of ten replicates with a statistical evaluation of the % relative standard deviation (% RSD), which depends on in-house or matrix standards.

1. METHOD VALIDATION
Prepared By :
Shilpi Rajput (Analyst)
Sigma Test & Research Centre

2. REPEATABILITY
Definition:- Repeatability is the closeness
of agreement between mutually
independent test result obtained with the
same method on identical test material in
the same laboratory by the same analyst
using the same equipment with in short
interval of time.

3. Determination &
Acceptability

4. A sample assessment of repeatability
will be acceptable . A minimum of ten
replicate sample determination should
be made together with a sample
statistical assessment including the %
RSD.
Limit of % RSD is in-house or matrix
dependable.

5. THANK YOU