BUBBLE PADDLE RESERVOIR, Tumble Powered, 96 Channel, PTFE Reservior with 4 Chambers, Sculpted Bottom, with 4 Bubble Paddles, Parylene Coated, 9 Bubbles/Paddle, with PTFE Hubs, each Chamber Holds 70mL (4 columns 1-6, 7-12, 13-18, 19-24),