For all or most of the tests to determine the physical-mechanical and chemical fue properties, standards are important to assure the comparability of results. Most ol the fuel deliveries are settled on the basis of on-site measurements to determine moisture content, particle size and size distribution and other main fuel properties Therefore, there is a strong requisite for standards for the on-site tests. The tests should be suitable to determine the fuel properties and to assess the fuel qualitj and value at the point of fuel delivery. These on-site test methods do not need tc have the same accuracy as the actual laboratory methods but rather be simple, yei reliable and inexpensive, while being a representative assessment of the fuel value Smaller plant owners have been reluctant about this idea, as they fear that new elaborate standards for sampling and testing may force them to hire externa consultants and services from specialized laboratories. This would obviously raist the costs for bioenergy.