--- product_id: 369212249 title: "7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring" brand: "ronyes lifescience" price: "S$33" currency: SGD in_stock: true reviews_count: 5 category: "Ronyes Lifescience" url: https://www.desertcart.sg/products/369212249-7-pcs-ptfe-magnetic-stirrer-mixer-stir-bar-spinbar-stirring store_origin: SG region: Singapore --- # 7 sizes from 10mm to 35mm Chemically inert PTFE casing Recessed bezel reduces vibration 7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring **Brand:** ronyes lifescience **Price:** S$33 **Availability:** ✅ In Stock ## Summary > ⚡ Stir Smarter, Not Harder: Elevate Your Lab Game! ## Quick Answers - **What is this?** 7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring by ronyes lifescience - **How much does it cost?** S$33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/369212249-7-pcs-ptfe-magnetic-stirrer-mixer-stir-bar-spinbar-stirring) ## Best For - ronyes lifescience enthusiasts ## Why This Product - Trusted ronyes lifescience brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Size Range:** Seven magnetic stir bars from 10mm to 35mm cover all your sample volume needs effortlessly. - • **Trusted by Professionals:** Top-rated with 4.6 stars and over 1,100 reviews—join the community of expert users. - • **Lab-Grade Chemical Resistance:** PTFE casing ensures durability even with harsh chemicals, perfect for cutting-edge research. - • **Optimized for Small Sample Volumes:** Engineered for environmental testing and life sciences where precision matters most. - • **Precision Stirring with Minimal Vibration:** Recessed bezel design stabilizes stirring, delivering smooth, consistent mixing every time. ## Overview This 7-piece PTFE magnetic stir bar set offers chemically inert, vibration-reducing cylindrical rods in multiple sizes (10mm to 35mm), ideal for precise stirring in biological, chemical, and environmental lab applications. Trusted by professionals with a 4.6-star rating, it’s engineered to optimize small sample mixing with durable, friction-reducing Teflon casing. ## Description Length Diameter 10 mm (3/8") 5mm(1/5")12 mm (1/2") 7mm(1/3")20mm(3/4") 8mm(1/3")25mm(1") 7mm(1/3")28mm(1-1/8 ") 8mm(1/3 ")30mm(1-1/5")8mm(1/3")35mm(1-2/5") 9mm(2/5") Review: decent cheap stirrer set. - these work just fine, haven't had an issue yet using them with my magnetic stirrer/hot plate. didn't realize how small the smallest ones were and don't know if I'll ever find a use for them to be honest as the smallest one is about the size of a Rice Crispy.. but they come in a nice cardboard box with foam cutouts for each for storage. they also double as boiling beads, lol. cannot complain for $10 as they do what they say and I've had no issues. Review: Exactly as shown. Pleased. - These magnegic stirrers are exactly as pictured and described. They work perfectly and I am very pleased. ## Features - It is used to stir a liquid or solution in biological, chemical, medical and research laboratory applications - Teflon (PTFE) casing is chemically inert, be used with harsh chemicals and reduces friction while in spinning - Recessed bezel helps to reduce vibration while stirring.Particularly Useful for Environmental Testing and Life Science Applications in Which Small Sample Volumes Need to be Prepared and Evaluated - The stir bar is placed in a container of liquid or solution, which is seated on a magnetic stirrer, which is a laboratory device which generates a rotating magnetic field using a rotating magnet or a plurality of stationary electromagnets - Provides a larger surface area and added turbulence when the smooth surface of the cylindrical rods compared ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01ISMV5G4 | | Best Sellers Rank | #184,257 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #87 in Lab Stirrer Bars | | Brand | Ronyes Lifescience | | Brand Name | Ronyes Lifescience | | Colour | Beige | | Country Of Origin | USA | | Customer Reviews | 4.6 out of 5 stars 1,135 Reviews | | Item Thickness | 5 Millimetres | | Item Weight | 0.05 Kilograms | | Manufacturer | Ronyes Lifescience | | Manufacturer Part Number | 7MSB | | Material | Polytetrafluoroethylene | | Material Type | Polytetrafluoroethylene | | Model Number | 7MSB | | Number of Items | 7 | | Number of Packs | 1 | | Number of Pieces | 1 | | Shape | Cylindrical | | UPC | 606462652407 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Ronyes Lifescience - **Colour:** Beige - **Item Thickness:** 5 Millimetres - **Material:** Polytetrafluoroethylene - **Shape:** Cylindrical ## Images ![7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring - Image 1](https://m.media-amazon.com/images/I/61aPielrfsL.jpg) ![7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring - Image 2](https://m.media-amazon.com/images/I/517jbGYiUGL.jpg) ![7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring - Image 3](https://m.media-amazon.com/images/I/51TVlehG0BL.jpg) ![7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring - Image 4](https://m.media-amazon.com/images/I/71m0RPgViWL.jpg) ![7 Pcs PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring - Image 5](https://m.media-amazon.com/images/I/51MZUQrCqgL.jpg) ## Questions & Answers **Q: Which country is this made in?** A: Um, the big one with lots and lots of people, starts with 'C'... **Q: Is the item well-packaged?** A: Yes the item was well-packaged. Came in nice small white box that contains the 7 different size magnetic stir bars. **Q: Does it come with an instruction sheet to suggest which size for which volume of liquid? I need for a 4 liter container, 3000 ml of liquid?** A: There are no instructions. I tried a couple different ones until I found the one that worked best for my needs **Q: Can we use this to replace a stirrer that comes with self stirrer coffee mugs?** A: Yes, it's a magnet which has been coated with PTFE. ## Customer Reviews ### ⭐⭐⭐⭐⭐ decent cheap stirrer set. *by B***R on 10 May 2020* these work just fine, haven't had an issue yet using them with my magnetic stirrer/hot plate. didn't realize how small the smallest ones were and don't know if I'll ever find a use for them to be honest as the smallest one is about the size of a Rice Crispy.. but they come in a nice cardboard box with foam cutouts for each for storage. they also double as boiling beads, lol. cannot complain for $10 as they do what they say and I've had no issues. ### ⭐⭐⭐⭐⭐ Exactly as shown. Pleased. *by P***R on 1 March 2021* These magnegic stirrers are exactly as pictured and described. They work perfectly and I am very pleased. ### ⭐⭐⭐⭐⭐ Buenos *by Z***O on 3 November 2025* Le sirvieron bien a mi hijo ## Frequently Bought Together - Ronyes Lifescience PTFE Magnetic Stirrer Mixer Stir Bar Spinbar Stirring (35mm, 30mm, 28mm, 25mm, 20mm, 12mm, 10mm) - Slendor Magnetic Stirrer Hot Plate Mixer 1000ml Stirring Capacity 5 x 5 inch Max 520°F Hotplate and 100-2000 RPM Stirrer, Stirring Bar & Support Stand Included - Glass Measuring Low Form Beaker Set 50ml 100ml 250ml Borosilicate Lab Beaker Set … --- ## 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.sg/products/369212249-7-pcs-ptfe-magnetic-stirrer-mixer-stir-bar-spinbar-stirring](https://www.desertcart.sg/products/369212249-7-pcs-ptfe-magnetic-stirrer-mixer-stir-bar-spinbar-stirring) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-13*