--- product_id: 144361561 title: "3 Pack, PTFE Octagon with Pivot Ring Magnetic Stir Bar Set - 50mm / 1.96 Inch" brand: "obtainsurplus" price: "382 zł" currency: PLN in_stock: true reviews_count: 5 category: "Obtain Surplus" url: https://www.desertcart.pl/products/144361561-3-pack-ptfe-octagon-with-pivot-ring-magnetic-stir-bar store_origin: PL region: Poland --- # 50mm precision length Autoclavable & reusable Chemical-resistant PTFE 3 Pack, PTFE Octagon with Pivot Ring Magnetic Stir Bar Set - 50mm / 1.96 Inch **Brand:** obtainsurplus **Price:** 382 zł **Availability:** ✅ In Stock ## Summary > 🧬 Stir Smarter, Not Harder — Elevate Your Lab Game! ## Quick Answers - **What is this?** 3 Pack, PTFE Octagon with Pivot Ring Magnetic Stir Bar Set - 50mm / 1.96 Inch by obtainsurplus - **How much does it cost?** 382 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/144361561-3-pack-ptfe-octagon-with-pivot-ring-magnetic-stir-bar) ## Best For - obtainsurplus enthusiasts ## Why This Product - Trusted obtainsurplus brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lab-Grade Durability:** Crafted from premium PTFE for unmatched chemical resistance and longevity. - • **Precision Engineering:** Octagonal shape with pivot ring maximizes magnetic coupling and stability during stirring. - • **Sterilize with Confidence:** Fully autoclavable for seamless integration into sterile workflows. - • **Set of Three for Versatility:** Multiple bars to handle various batch sizes or backup your workflow effortlessly. - • **Optimal Size for Powerful Stirring:** 50mm octagonal design ensures efficient vortex creation in larger volumes. ## Overview This 3-pack of 50mm PTFE octagonal magnetic stir bars features chemical-resistant, autoclavable construction designed for reliable, high-performance stirring in laboratory settings. Engineered for compatibility with a range of magnetic stirrers, these bars deliver efficient vortex formation and durability, making them essential for professional scientific workflows. ## Description International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Review: These are well made and larger than I imagined, even knowing the dimensions! I purchased the INTLLAB magnetic stirrer, which works very well, and also purchased these bars. I didn't understand at the time that the length needs to be close to the length between the centers of the magnets in the stirrer, but that information isn't provided by the seller. These work a little bit, but only at a very specific slow speed. When the speed was increased, they broke the magnetic bond and rattled around. INTLLAB included a 25mm x 7mm bar that works great up to full speed! It was my fault for not understanding. Review: Used for 4 liter yeast starters. This is really nice. Whirlpool down 4-5 inches and allows me to run full power. One seems to be a little off balance but usable. The other 2 are perfect. ## Features - Laboratory Grade - Chemical resistant PTFE material - Autoclavable ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07H4477HJ | | Brand | ObtainSurplus | | Colour | White | | Customer Reviews | 4.2 4.2 out of 5 stars (170) | | Item Dimensions L x W x Thickness | 5L x 1W x 1Th centimetres | | Item Shape | Octagonal | | Item Thickness | 10 Millimetres | | Manufacturer | Obtainium LLC | | Manufacturer Part Number | 052813004 | | Material Type | PTFE_(Polytetrafluoroethylene), teflon | | Model Number | 052813004 | | Number of Pieces | 3 | | Unit Count | 3.0 count | ## Product Details - **Brand:** ObtainSurplus - **Colour:** White - **Material:** PTFE_(Polytetrafluoroethylene), teflon - **Product dimensions:** 5L x 1W x 1Th centimetres - **Shape:** Octagonal ## Images ![3 Pack, PTFE Octagon with Pivot Ring Magnetic Stir Bar Set - 50mm / 1.96 Inch - Image 1](https://m.media-amazon.com/images/I/51b1mhEgQuL.jpg) ![3 Pack, PTFE Octagon with Pivot Ring Magnetic Stir Bar Set - 50mm / 1.96 Inch - Image 2](https://m.media-amazon.com/images/I/61NSHCwRRPL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by U***R on 14 February 2023* These are well made and larger than I imagined, even knowing the dimensions! I purchased the INTLLAB magnetic stirrer, which works very well, and also purchased these bars. I didn't understand at the time that the length needs to be close to the length between the centers of the magnets in the stirrer, but that information isn't provided by the seller. These work a little bit, but only at a very specific slow speed. When the speed was increased, they broke the magnetic bond and rattled around. INTLLAB included a 25mm x 7mm bar that works great up to full speed! It was my fault for not understanding. ### ⭐⭐⭐⭐⭐ Review *by U***R on 3 January 2021* Used for 4 liter yeast starters. This is really nice. Whirlpool down 4-5 inches and allows me to run full power. One seems to be a little off balance but usable. The other 2 are perfect. ### ⭐⭐⭐⭐⭐ Review *by G***S on 17 March 2020* These mix the liquid faster and with less noise than the shorter bars I've used. Not unbalanced as one reviewer said, it often depends on how centered the bars are on the magnetic stirring plate (particularly home-made plates). ## Frequently Bought Together - ObtainSurplus 3 Pack, Magnetic Stir Bar - 50mm / 1.96 Inch - Weewooday 8 Pieces 30 mm/ 1.18 Inch PTFE Magnetic Stirrer Mixer Stir Bar ,White Color, Stir Rod Magnetic, Laboratory Bar, Stir Plate Bar,Stir Plate Magnet --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/144361561-3-pack-ptfe-octagon-with-pivot-ring-magnetic-stir-bar](https://www.desertcart.pl/products/144361561-3-pack-ptfe-octagon-with-pivot-ring-magnetic-stir-bar) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-25*