Cheap Prism Acrylic, Hollow, Equilateral Light Refraction with Liquids

Customer Ratings:

Works as expected, but for doing multiple iterations of experiements, I had to dremel one end open. I needed a quick and easy way to fill, empty, clean, and re-fill. The tiny filler nipple was difficult to use. Might have been easier with a tiny funnel or similar.

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Got this funnel for a science experiment for my daughter. The photo here looks terrible, but the actual prism is quite nice looking with molded plastic corners. It did come with a funnel and stopper, although it is still somewhat difficult to empty. I will probably take the other reviewer's advice and make another hole or expand the hole. Overall we're happy!