{"product_id":"weewooday-ptfe-magnetic-stir-bars-30-mm-pack-of-800-chemical-resistant-cylindrical-lab-stir-bars","title":"Weewooday PTFE Magnetic Stir Bars 30 mm Pack of 800 — Chemical‑Resistant Cylindrical Lab Stir Bars","description":"\u003cp\u003e\u003cstrong\u003eWeewooday 30 mm PTFE magnetic stir bars are cylindrical, chemical-resistant stirrers designed to pair with magnetic stir plates for efficient mixing in laboratory settings.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis pack contains 800 identical 30 mm (1.18 in) PTFE-coated magnetic stir bars made with a quality magnetic steel core. Each bar combines a smooth, cylindrical PTFE exterior and a strong magnetic core for steady rotation on a variety of magnetic or heating stirrers. The white PTFE finish resists most chemicals, reduces friction, and minimizes contamination and wear so you can rely on consistent performance during routine mixing and heating tasks.\u003c\/p\u003e\n\n\u003ch3\u003eHow will these stir bars perform on a busy lab stir plate?\u003c\/h3\u003e\n\n\u003cp\u003eThese 30 mm bars are sized to deliver consistent vortexing in small-to-medium vessels while remaining stable under typical rotational speeds. PTFE's low-friction surface helps the bar spin smoothly, and the magnetic steel core maintains coupling with the stir plate even during vigorous stirring.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e30 mm length for good vortex formation in beakers and flasks.\u003c\/li\u003e\n  \u003cli\u003eCylindrical design reduces wobble and improves speed stability.\u003c\/li\u003e\n  \u003cli\u003ePTFE coating minimizes contamination and resists chemical attack.\u003c\/li\u003e\n  \u003cli\u003eDurable magnetic core retains strong attraction over repeated use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat chemicals and temperatures can these PTFE-coated bars handle?\u003c\/h3\u003e\n\n\u003cp\u003eThe PTFE exterior is widely resistant to acids, bases, and most organic solvents encountered in general laboratory work. While PTFE endures many chemical environments, users should avoid exposing the bars to conditions outside PTFE or magnetic steel limits, such as extreme temperatures beyond typical heating-stirrer ranges.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePTFE resists corrosion from common lab reagents and solvents.\u003c\/li\u003e\n  \u003cli\u003eSuitable for standard heating-stirrer applications—check equipment temperature limits.\u003c\/li\u003e\n  \u003cli\u003eNot recommended for prolonged exposure to strong oxidizers at extreme heat.\u003c\/li\u003e\n  \u003cli\u003eInspect for wear or coating damage before use in aggressive chemistries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to use and maintain these magnetic stir bars?\u003c\/h3\u003e\n\n\u003cp\u003eOperation is straightforward: place a bar in your vessel, set the vessel on the stir plate, and start the stirrer. PTFE surfaces are easy to clean and chemically inert, simplifying maintenance; however, routine inspection for chips or magnetic weakening is recommended to prevent contamination or performance loss.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDrop into beakers, cylinders, or flasks and let the stir plate engage the magnetic core.\u003c\/li\u003e\n  \u003cli\u003eCleans easily with solvents or detergent; avoid abrasive scrubbing to protect the PTFE.\u003c\/li\u003e\n  \u003cli\u003eInspect for burrs or coating defects before critical experiments.\u003c\/li\u003e\n  \u003cli\u003eStore dry and separated to prevent scratching and magnetic clustering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vessels and applications suit a 30 mm stir bar?\u003c\/h3\u003e\n\n\u003cp\u003eA 30 mm bar works best in vessels from small beakers up to medium flasks and graduated cylinders where it can develop an effective vortex without hitting vessel walls. It's commonly used for sample mixing, reagent dissolution, and routine laboratory workflows across academia, research, and light industrial labs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIdeal for 50–500 mL beakers and similar-volume flasks.\u003c\/li\u003e\n  \u003cli\u003eUseful for dissolving solids, mixing reagents, and gentle emulsions.\u003c\/li\u003e\n  \u003cli\u003eCompatible with most bench-top magnetic and heating stirrers.\u003c\/li\u003e\n  \u003cli\u003ePack of 800 supports high-throughput or multi-station needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Teams and individuals running labs, classrooms, or pilot-scale work that require reliable, economical stirring accessories. This large 800-piece kit suits institutions that need replacement bars for multiple stations, teaching labs stocking consumables, or research groups managing frequent turnover. Choose these PTFE-coated bars when you want corrosion-resistant, low-friction stirring tools that pair with standard magnetic and heating stir plates.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these stir bars compatible with any magnetic stir plate?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they work with most bench-top magnetic and heating stirrers; ensure your stir plate can reliably couple with a 30 mm bar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I autoclave these PTFE-coated stir bars?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: PTFE tolerates many autoclave protocols, but confirm the magnetic core specifications and autoclave temperature limits first.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Weewooday","offers":[{"title":"Default Title","offer_id":52905834676536,"sku":"B0BYNN5HL5","price":162.29,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/6799\/6984\/files\/weewooday-stir-bar-front-packaging.jpg?v=1788483034","url":"https:\/\/kelorix.ca\/products\/weewooday-ptfe-magnetic-stir-bars-30-mm-pack-of-800-chemical-resistant-cylindrical-lab-stir-bars","provider":"Kelorix Canada | Shop Home, Electronics, Beauty, Toys \u0026 More","version":"1.0","type":"link"}