<p>An adapter installs on a receiving container aperture to provide a stable base for supporting a common funnel used for transfer of material into the receiving container. Installation on the receiving container aperture is quick and stable by moving the edges of an aperture engagement portion together to allow it to fit inside the receiving container aperture, then moving the aperture engagement portion edges apart so the outer surface of the aperture engagement portion contacts the inside of the aperture. A spring or a locking mechanism force exerts a continuous outward force to maintain the adapter in the receiving container aperture. The funnel is then supported by holder rings attached to the adapter that are engaged by the funnel stem. The rings are preferably smaller diameter towards the lower part of the fingers to correspond to the funnel stem taper. The adapter thus provides hands-free use of the funnel.</p>
