Check the listing for details. Rheodyne Preparative Sample Injector 3725i (2/6), PEEK, w/ Switch. Condition: New, Made in United States. Listed at 700.00 USD. The Rheodyne Preparative Sample Injector 3725i is a high-performance liquid chromatography (HPLC) device designed for use in physical, medical, microbiological, and biological laboratories. This specific injector model is made with PEEK material and includes a switch for added functionality. It is designed for 1-10 cm I.D. HPLC columns and is ideal for precise and reliable sample injection in chromatography systems. The Rheodyne brand is known for producing quality laboratory equipment, making this injector a valuable tool for various scientific disciplines. I have an extra new one in the box I won’t need. Price currently if purchased new is 2100, get it here for less. Pictured is a stock pic, but mine is new and unopened, fresh and ready to go. Thanks for looking.