Funnel compatible with standard PET bottle screw for solvent filtration

This funnel is particularly useful for scale modellers who

• use acrylic paints
• use ultrasonic cleaners for their tools (usually airbrushes) with some kind of solvent

I use an ultrasonic cleaner to clean my airbrush (and other tools) with a solvent (IPA or methylated spirit). The solvent can be used several times but

• it must be stored outside the ultrasonic cleaner to avoid evaporation and odour
• it must be filtered between uses

So I use this funnel with coffee filter (one or two) to pour the dirty solvent from the cleaner into the PET bottle. This way I can use the solvent many times before it needs to be disposed of in an ecological way.

I also use this funnel to collect waste, filter solvent/water after cleaning brushes etc.

Features:

• The funnel fits the screw of the pet bottle, so working with it is quite safe. There is very little room for error/leakage and you don't need a 3rd hand.
• Size 4 coffee filters fit perfectly into the funnel. Coffee filters I use as a cheap version for chemical filters as for my purpose their quality is quite ok, their cheap and easy to get