Certification process condacted under system 3 includes testing and factory surveillance. Factory surveillance is conducted and samples of the product from the point of production are assessed for ongoing conformity.

This certification system includes the following:

• samples requested by the certification body,
• determination of characteristics by testing or assessment,
• initial assessment of the production process or the quality system, as applicable,
• evaluation of the test and assessment reports,
• decision on certification,
• licence,
• surveillance by testing or inspection of samples from the factory and assessment of the production process.

System 1a includes testing; samples of the product are assessed for conformity. The sampling may or may not be statistically significant of the entire population of product.
System 1b includes testing; samples of the product are assessed for conformity. The sampling covers the entire population of product. A certificate of conformity is given to each product represented by the sample.

In surveillence time owner of the certificate may apply for extension of validity or the skope of certificate. Certificate may by also withdraw or suspended – on deliverer application (in first case) or by BC.