{"product_id":"fisherbrand-round-stir-bar-with-removable-pivot-ring-127-mm-length-5-in","title":"Fisherbrand Round Stir Bar with Removable Pivot Ring 127 mm Length","description":"\u003ch3\u003eFisherbrand 14-512-138 Round Stir Bar – 127 mm x 16 mm, Removable Pivot Ring\u003c\/h3\u003e\n\u003cp\u003eThe Fisherbrand 14-512-138 is an industrial-strength magnetic stir bar engineered for the high-torque mixing of large liquid volumes. Measuring 127 mm (5 inches) in length with a 16 mm diameter, this bar is designed for use with high-capacity magnetic stirrers in vessels such as 10L to 50L carboys and heavy-walled flasks. It features a high-energy Alnico V magnetic core encapsulated in a seamless, medical-grade PTFE (Polytetrafluoroethylene) coating. The standout feature is the removable pivot ring; when installed, this ring acts as a fulcrum to reduce friction and \"chatter\" against the bottom of the container, ensuring smooth, centered rotation. The PTFE exterior provides nearly universal chemical resistance and is rated for temperatures from -200°C to +260°C. Fully autoclavable and easy to clean, the 14-512-138 is a robust solution for large-scale reagent preparation, buffer homogenization, and pilot-plant processing.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Performance and Design\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eRemovable Pivot Ring:\u003c\/b\u003e Provides the flexibility to use the bar as a standard cylindrical stirrer or as a high-speed pivot stirrer. The ring minimizes surface contact, which prevents \"spin-out\" and reduces wear on the bottom of the glass vessel.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eAlnico V Magnetic Core:\u003c\/b\u003e Utilizes a premium permanent magnet alloy to provide maximum coupling strength with the drive magnet of the stirrer, essential for overcoming the resistance of high-viscosity fluids.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eChemically Inert PTFE Coating:\u003c\/b\u003e The thick, non-porous fluoropolymer shell is resistant to almost all laboratory chemicals and prevents sample contamination, even during long-term exposure to corrosive acids or bases.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eSeamless Construction:\u003c\/b\u003e The rounded ends and smooth surface are designed to eliminate crevices where bacteria or cross-contaminants could hide, facilitating rapid and thorough sterilization.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eCatalog Number:\u003c\/b\u003e 14-512-138\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eLength:\u003c\/b\u003e 127 mm (5 inches)\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eDiameter:\u003c\/b\u003e 16 mm (5\/8 inch)\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eMaterial:\u003c\/b\u003e PTFE (Teflon) Coating \/ Alnico V Magnet\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eStyle:\u003c\/b\u003e Round with Removable Pivot Ring\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eSterilization:\u003c\/b\u003e Autoclavable\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Benefits \u0026amp; Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eLarge-Scale Buffer Prep:\u003c\/b\u003e The 5-inch length is ideal for creating deep vortices in large-diameter carboys, ensuring rapid dissolution of salts and powders.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eIndustrial Homogenization:\u003c\/b\u003e Used in pilot plants for the continuous mixing of batches where high torque and chemical inertness are mandatory.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eHigh-Viscosity Mixing:\u003c\/b\u003e The heavy mass and powerful magnetic pull of the 14-512-138 make it effective for stirring syrups, oils, and dense biological media.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp style=\"margin: 0;\"\u003e\u003cb\u003eVessel Protection:\u003c\/b\u003e The pivot ring reduces the physical \"scuffing\" of the internal floor of expensive glassware, extending the life of the vessel.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003cp style=\"margin: 0; font-size: 0.8em;\"\u003e\u003ci\u003eAll product names, logos, and brands are property of their respective owners.\u003c\/i\u003e\u003c\/p\u003e","brand":"Fisherbrand","offers":[{"title":"Default Title","offer_id":44498480431356,"sku":"4791","price":57.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8463\/5132\/files\/fisher-scientific-round-stir-bar-with-removable-pivot-ring-127-mm-length-magnetic-stir-bars-fisher-scientific-716083.jpg?v=1757545442","url":"https:\/\/lifesciencestrading.com\/products\/fisherbrand-round-stir-bar-with-removable-pivot-ring-127-mm-length-5-in","provider":"Life Sciences Trading","version":"1.0","type":"link"}