Water quality. Guidance on assuring the quality of biological and ecological assessments in the aquatic environment Ingestion-build-96603 BS EN 13248 defines terms

BS EN 13248 defines terms

This standard specifies regulations for protective helmets for drivers and passengers of mopeds and of motorcycles with or without side-car and to the visors fitted to such helmets or intended to be added to them

References to the new Pressure Equipment Directive (PED) (2014/68/EU) have been included as well as the usual updating of all of the cross-referenced standards that appear in PD 5500

BS 5839-8 can be used for guidance in the design

4 Internal stresses in the base material

Water quality. Guidance on assuring the quality of biological and ecological assessments in the aquatic environment Ingestion-build-96603 BS EN 13248 defines terms