Under Atex 94/9/EC, electrical equipment in Categories 1 and M1 (Zone 0), must be submitted to a Notified Body to obtain an EC Type Examination Certificate. Categories 1 and M1 equipment must also be manufactured under a Quality System which has also been approved by a Notified Body (Production QA). The onus is also on the manufacturer to check and attest that the equipment is in conformity with the Directive and has been tested by a Notified Body (Product Verification).

Under Atex 94/9/EC, electrical equipment in Categories 2 and M2 (Zone 1), must be submitted to a Notified Body to obtain an EC Type Examination Certificate. Categories 2 and M2 equipment must have a final inspection and testing Quality System approved by the Notified Body (Product QA). The manufacturer must ensure and declare that the equipment is in conformity with the type tested by the Notified Body and take all measure necessary to ensure that manufacturing process assures compliance (Conformity to Type).

Under Atex 94/9/EC, electrical equipment in Group II Category 3, does not require an EC Type Examination Certificate from a Notified Body. The onus is on the manufacturer to take all necessary measures the ensure that the manufacturing process guarantees compliance with the Directive and also declare that the equipment satisfies the Directive requirements. In addition, the manufacturer must have full technical documentation available to support the declaration.