International

Hydraulic machines – Francis turbine pressure fluctuation transposition

Biogas production, conditioning, upgrading and utilization
Terms, definitions and classification scheme

Solid biofuels
Fuel specifications and classes
Part 1: General requirements

Hydrogen generators using fuel processing technologies
Part 2: Test methods for performance

Acoustics
Determination of sound power levels of noise sources
Guidelines for the use of basic standards

Preparation of steel substrates before application of paints and related products
Analytical colorimetry method to support visual assessment of surface preparation grades

Hydrogen fuel quality - Product specification

Greenhouse gases
Competence requirements for greenhouse gas validation teams and verification teams

General principles and requirements for bodies validating and verifying environmental information

Environmental management
Environmental communication
Guidelines and examples