Fingertop Size Peristaltic Pump Compact dimensions Stepper motor type with 5 different discharge rates.Range of minimum 0.06 μL/min to maximum 1.1 mL/min depending on the pump option. Tubing options of Silicone or PharMed® BPT. Detachable / Replaceable Pump Head Pump head may be sterilized by autoclave or gamma ray* Replaceable and Autoclavable Pump Heads Suitable for analytical instruments, medical devices, fuel cells, drug delivery systems, regenerative medicine (cell culturing), etc. An easy-to-use controller is available upon request (Sold Separately). Please feel free to contact us for more details about the controller. Controllers for Ring Pump RP-QⅡ/RP-QⅢ Note: Details such as specifications, etc., may be changed without notice. *: Silicone Tubing: Autoclavable one time at 121°C for 25 minutes. / Gamma-ray sterilization with 25 kGy.PharMed® BPT Tubing: Gamma-ray sterilization with 25 kGy. (Not Autoclavable) We also have a similar product to this pump, it's called: Ring Pump - RP-Q series MECHANISM OF THE RING PUMP For more information: Mechanism of the Micro Ring Pump Note 1: Details such as specifications, etc., may be changed without notice. Note 2: Visual diagram above is from Aquatech Co., Ltd. VIDEOS OF THE RP-Q SERIES Note: Details such as specifications, etc., may be changed without notice.