Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to 100 kHz with regard to exposure of human beings - Requirements for measuring instruments Ingestion-build-228203 For example it sets out:

For example it sets out:

94 Hz system and the 50 Hz system refers to the field frequency 50

BS EN 485-4:1994 specifies the tolerances on shape and dimensions for wrought aluminium and aluminium alloy sheet

wholesale and retail trade service buildings

This part of ISO 12782 specifies the determination of the content of “reactive” aluminium in the form of amorphous aluminium oxides and hydroxides in soil and other materials by extraction with ammonium oxalate/oxalic acid

Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to 100 kHz with regard to exposure of human beings - Requirements for measuring instruments Ingestion-build-228203 For example it sets out: