Blue Bowl Concentrator Kit with Pump, Leg Levelers, Vial ... Concentrator kit includes the blue bowl, 3 plastic leg levelers, 1/4 ounce plastic vial, 750 gph 12V pump, 3′ of 3/4″ hose, battery clips, and instructions The blue bowl gold concentrator is completely portable and will quickly remove your fine gold from your concentrates.