This International Standard specifies details of an internationally acceptable series of glass separating funnels and dropping funnels suitable for general use in laboratories.
BS ISO 4800:1998 history
0000 BS ISO 4800:1998(2000)
1999BS ISO 4800:1999 Laboratory glassware. Separating funnels and dropping funnels
1999BS ISO 4800:1998 Laboratory glassware - Separating funnels and dropping funnels