The RFF8C Fuel Filter Funnels from Parker Racor are the best way to check you're not being sold dirty fuel! They allow visual inspection of the integrity of your fuel supply as you refuel.
The 'filter-in-a-funnel' is a heavy duty, fast flow solution, that separates damaging free water and contaminates from petrol/gasoline, diesel, heating oil and kerosene.
Manufactured using industrial grade black electron-conductive polypropylene. Carbon powder is injected into the plastic so they conduct static electricity, allowing the funnel to be grounded. This is a very important safety feature of the RFF8C.
Please note, touching the inner element can damage it and reduce the effectiveness of the Aquabloc properties.