Scheme of Inspection and Testing (SIT) is a document which specifies the control over production process, which the manufacturer is required to exercise while operating the certification marks scheme..
The SIT contains, inter alia the following provisions:
a) Labelling and Markings on the product
b) Definition of control unit
c) Levels of controls to be exercised, which includes number of samples to be tested and frequency of testing
d) Acceptance criteria – control unit wise
e) Tests for which sub-contracting of test facilities is permitted
g) Directions to licensees in event of failures, wherever applicable