The Paterson Funnel is made of virtually unbreakable polyethylene funnel, that is resistant to all darkroom chemicals.
It is designed with external ribs to prevent air-locks, for faster pouring without back-up and spill-over.
Diameter: 4 - 1/4"
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Comments about Paterson Funnel (4-1/4"):
I use this when pouringmy darkroom chemicals into storage containers from either print trays or negative developing drums. The extra plastic at the base of the funnel is considerably useful as it prevents the funnel from sitting too snugly on the container's opening and sealing it from airflow, which makes for quick, easy pouring.
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