Remove the clip of the spring from the glass tube. While holding this clip turn the upper bowl of the siphon upside down and shake the grinds out into the garbage or compost. Move the upper bowl to the sink and let the filter drop into the sink. Run warm water through the upper bowl, holding the siphon upright, and use a soft brush to scrub the inside of the upper bowl. Turn the upper bowl upside down onto a drying rack. Grab the filter and rinse excess grinds off the filter, twist the filter holder and dispose of the filter. Run the filter holder under warm water, do not use soap. Once you have poured all the coffee out of the lower bowl, run warm water into the bowl and give a few vigorous swirls. Use a test tube brush to clean the bottom of the lower bowl.