Decanting funnels are indispensable for safe and easy funneling. Therefore, the material of the funnel is very important. The funnels from Bochem, available in the Analytics-shop, are made of stainless steal. Funnels from IDL are made of Polypropylen (PP). When using glass funnels, it is advisable to choose standard funnels, separating funnels and dropping funnels of Duran.