6 preferred sizes of funnel suitable for the 8 sizes of filter paper (55 mm to 240 mm) currently available in Europe. The funnels are for use with aqueous solutions between 0C and 60C but not for corrosive on non-aqueous liquids. Limits specified for flexibility and ionic extractables.
BS 5404-3:1977 history
0000 BS 5404-3:1977(2011)
1977BS 5404-3:1977 Specification for plastics laboratory ware - Filter funnels