The Paterson Developing Tank 4 Super System is simpler to load, faster to fill and easier to clean than any other tank. It has a large diameter one piece lid and funnel which clips into place positively and securely, enabling the tank to be filled and emptied quickly. The Paterson Universal Tank takes two 35mm film, or a single 120/220 film. Supplied complete with one 35mm/120/220 Auto-Load Reels. A water-tight EVA cap prevents leakage during inversion agitation. This tank uses less than 300ml for a single 35mm film.