BP-1/4 - Make purchasing consumable pumps a thing of the past. The BP- 1/4 pump is constructed of stainless steel with a plastic cylinder and dispenses 1/4 ounce (7 mL) portions directly from a 28 mm bottle opening. The one-piece discharge tube with over molded knob and combination ball/pinch valve design has only a few parts. And clean-in-place certification makes maintenance a breeze. Standard features include: Pump stays primed for accurate portions every time Cap threads directly on a bottle with a 28 mm opening (typically 750 mL) 1/4 oz (7 mL) stroke, maximum/minimum Black knob