Three new standards are available to qualify fluid process filter and are unique in the world. They have been developed under AFNOR committees to qualify filters for the power plant industries in a first time but can be used for pharmaceutical applications or water treatment industries.

NFX 45-303 has been updated in order to determine the particulate filtration efficiency and the retention capacity in such conditions the results are not biased by the clogging dust itself (such as cake filtration phenomena which may overestimate the filter performances).

NFX 45-310 has been updated to determine the burst differential pressure by following simultaneously the DP increase and the particle release.

NFX 45-308 has been updated to determine the behaviour of the filter cartridge to hot water circulation in terms of clogging conditions and on line downstream particle monitoring.

Both these 3 standards have been updated in order to give more confident results for the end users. This was an urgent request from the end user in order to prevent from bad interpretation of the test results Furthermore, they fix the test conditions in order to release a reference filtration rating , or a reference DP burst pressure in ambiant and hot conditions.