Legislation places for the responsibility for complying with specific safety requirements on both manufacturer and user, the usual method of demonstrating compliance is to obtain certificate from an independent recognized certifying authorities.
1. BASEEFA : UK 2. PTB : Germany 3. DEMKO : Denmark 4. Underwriters laboratory : USA 5. FM (factory manual) : USA 6. CSA : Canada 7. RIIS : Japan
The certifying authority gives details of the apparatus in the certificate after carrying out required testing for samples of the apparatus. The certificate will indicate the manufactures name and address, certificate number, type number, specification number, a short description for the apparatus and where applicable the groups of gases and temperature class.