Q. Please could you advise as to what size filter paper is required for use with CH0465C Hirsch 50mm Funnel. Does the diameter quoted, apply to the top, or base plate?
A. Hi Helen, thank you for your question. The supplier said: 5cm is the top I.D of the cup, bottom diameter of the cup is 16 (+/-)1mm. Stem length is 34mm and the total length of the funnel is 68mm. The size of the filter paper to be used is 15mm. The diameter applies to the top.