--- product_id: 10379316 title: "4 oz (120 ml) Magnetic Ferrofluid Science Bottle – Interactive Liquid Magnet Display for Experiments, Demonstrations & STEM Projects" brand: "applied magnets" price: "301.12 DT" currency: TND in_stock: true reviews_count: 9 category: "Applied Magnets" url: https://www.desertcart.tn/products/10379316-4-oz-120-ml-magnetic-ferrofluid-science-bottle-interactive-liquid store_origin: TN region: Tunisia --- # Visualizes magnetic field lines STEM-ready, classroom-grade 120 mL ferrofluid volume 4 oz (120 ml) Magnetic Ferrofluid Science Bottle – Interactive Liquid Magnet Display for Experiments, Demonstrations & STEM Projects **Brand:** applied magnets **Price:** 301.12 DT **Availability:** ✅ In Stock ## Summary > 🧲 Unlock the invisible forces shaping your world—magnetism made mesmerizing! ## Quick Answers - **What is this?** 4 oz (120 ml) Magnetic Ferrofluid Science Bottle – Interactive Liquid Magnet Display for Experiments, Demonstrations & STEM Projects by applied magnets - **How much does it cost?** 301.12 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/10379316-4-oz-120-ml-magnetic-ferrofluid-science-bottle-interactive-liquid) ## Best For - applied magnets enthusiasts ## Why This Product - Trusted applied magnets brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready-to-Use Science:** Pre-sealed 120 mL container means zero prep, just pure magnetic fascination at your fingertips. - • **STEM Learning Elevated:** Perfect for managers who champion innovation—engage teams or kids with hands-on magnetism demos. - • **Long-Lasting & Reusable:** Durable formula designed to maintain magnetic responsiveness across multiple demonstrations. - • **Magnetic Magic in a Bottle:** Watch ferrofluid spike and flow as it reveals invisible magnetic fields in real time. - • **Versatile Experiment Medium:** Test polarity, field strength, and shielding effects with any standard neodymium magnet. ## Overview This 4 oz (120 mL) Magnetic Ferrofluid Science Bottle offers a visually stunning, hands-on way to explore magnetic fields and superparamagnetism. Designed for STEM education and professional demonstrations, it’s a ready-to-use, durable liquid magnet that reacts dynamically to neodymium magnets. Ideal for classrooms, science fairs, and innovative presentations, it brings complex physics concepts to life with mesmerizing spikes and flows, making magnetic phenomena accessible and engaging. ## Description Product description INCREDIBLE NEODYMIUM STRENGTH Applied Magnets Neodymium rare earth magnets are stronger than the strongest ceramic magnets! With a grade of N42, each magnet packs a huge magnetic energy punch and will last forever under normal use. Unlike most other types of magnets, Applied Magnets Neodymium is highly resistant to demagnetization and will not lose their magnetization around other magnets. APPLIED MAGNETS Applied Magnets is able to offer you the high quality Neodymium magnets with consistent performance. This Super Strong Neodymium Cup Magnet is extremely powerful and built to last. It’s designed & manufactured under stringent, top quality standards using the latest technology to ensure you receive the best Neodymium Magnet every time. 7 Awesome Facts about Ferrofluid!! 1 Steve Papell of NASA developed the fluid in the 1960’s in response to the need for moving fuel in space where there is no gravity 2 They spike when subjected to magnetic field 3 They do not retain any magnetization once the external magnetic field is removed. 4 Ferrofluids have strong staining capacity. They can stain skin, glasses, bathroom sinks etc. Be careful when you use them. 5 Ferrofluids can be made in home (See here for detailed guide on How to make ferrofluids at home) 6 The composition of a typical ferrofluid is about 5% magnetic solids, 10% surfactant and 85% carrier, by volume 7 The surfactant is a liquid used to lower the surface tension (or interfacial tension) between two liquids or between a liquid and a solid. The common surfactants used in ferrofluids are oleic acid, tetramethylammonium hydroxide, citric acid, soy lecithin but are not limited to these. 5 more Awesome Facts about Ferrofluid!! 1. Surfactants are responsible for prolonging the settling rate in ferrofluids but they also reduce the fluid’s magnetic properties (specifically, the fluid’s magnetic saturation) 2. True ferrofluids are stable. This means that the solid particles do not agglomerate or phase separate even in extremely strong magnetic fields. 3. However, the surfactant tends to break down over time (a few years), and eventually the nano-particles will agglomerate, and they will separate out and no longer contribute to the fluid’s magnetic response. 4. Ferrofluids lose their magnetic properties at sufficiently high temperatures, known as the Curie temperature. This is the temperature at which certain materials lose their permanent magnetic properties, to be replaced by induced magnetism. 5. Ferrofluids have an exceptionally high magnetic susceptibility and the critical magnetic field for the onset of the corrugations can be realised by a small bar magnet. 5 more Awesome Facts!! 1. Doctors are working on a way to destroy tumors by injecting them with ferrofluids and then exciting them with magnetic field. 2. NASA has also experimented with flowing ferrofluids in a closed loop with electromagnets as an altitude control system. 3. Ferrofluid may make way for smart liquid which can morph between a solid and a liquid and act in ways we have not been able to fathom yet. 4. Ferrofluids are often classified as “superparamagnets” rather than ferromagnets as they do not retain magnetization in the absence of an externally applied field 5. Ferrofluids of suitable composition can exhibit extremely large enhancement in thermal conductivity (k; ~300% of the base fluid thermal conductivity). The large enhancement in thermal conductivity is due to the efficient transport of heat through percolating nanoparticle paths. Review: High-quality pharaoh fluid for the best price you’re going to find anywhere. - This is an awesome gift for anyone who enjoys science. I bought this for an experiment which it worked perfectly for, but I have ended up using the extra just to play with. It is incredibly interesting, and educational. All you need is a strong neodymium magnet, and a clear container to put it in. The only issue/problem that I have with it applies to any Ferrofluid, & that is that it is incredibly messy, so you need to either keep it contained, or put down some newspaper, and wear rubber gloves when using it. all things considered, the size of the bottle you get for the price & the overall fun and educational Experience Make it well worth the price. Review: Good buy - Tons of fun and a good solution for projects. ## Features - Magnetic Field Visualization – Ferrofluid visibly rearranges itself in response to magnetic forces, allowing users to observe how field lines form and shift. - STEM-Focused Learning Tool – Designed for classroom experiments, science projects, and demonstrations exploring magnetism, superparamagnetism, and ferromagnetic behavior. - Clear Educational Applications – Ideal for teaching physics and materials science principles, including field interactions, polarity, and magnetic attraction. - Hands-On Demonstration Aid – Provides a safe and engaging way to explore magnetic phenomena without specialized lab equipment. - Durable, Ready-to-Use Formula – Packaged in a sealed 120 mL container, the ferrofluid is pre-prepared for direct use in lessons, experiments, and demonstrations. - Versatile Experiment Medium – Can be used to test field strength, polarity effects, and the influence of distance or shielding materials. - Visual Research Support – Helps illustrate complex magnetic behaviors such as flux density and field gradients in an accessible, observable way. - Compatible With Standard Magnets – Works effectively with common neodymium or ceramic magnets, making it suitable for most educational settings. - Reusable and Long-Lasting – With proper handling, ferrofluid retains its properties over multiple demonstrations and experiments - Great for Science Kits and Displays – Suitable for school laboratories, science fairs, engineering exhibits, and research demonstrations involving magnetism. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00126LYAG | | Age Range Description | Adult | | Best Sellers Rank | #556,696 in Toys & Games ( See Top 100 in Toys & Games ) #4,616 in Educational Science Kits | | Brand Name | Applied Magnets | | Color | Black | | Customer Reviews | 4.3 out of 5 stars 91 Reviews | | Educational Objective | Science | | Included Components | Ferrofluid | | Is Assembly Required | No | | Item Type Name | Ferrofluid | | Item Weight | 0.22 Kilograms | | Manufacturer | Applied Magnets | | Manufacturer Minimum Age (MONTHS) | 144.00 | | Manufacturer Part Number | F-4oz | | Material Type | Synthetic,Magnetic | | Model Number | F-4oz | | Operation Mode | Manual | | Size | Large | | Subject Character | Ferrofluid | | Supported Battery Types | No batteries required | | Theme | Science | | UPC | 816799012953 | ## Images ![4 oz (120 ml) Magnetic Ferrofluid Science Bottle – Interactive Liquid Magnet Display for Experiments, Demonstrations & STEM Projects - Image 1](https://m.media-amazon.com/images/I/71isjwSLDGL.jpg) ## Questions & Answers **Q: The title says 120cc but the description says 30cc which is it???** A: it is 4oz. So the bottle it comes in is about 3 inches tall and approximately 1-3/4 inches in diameter. hope that helps. **Q: Can I used it in a magnetic vacuum seal?** A: The EFH-1 type listed here is not recommended for use in speakers and I would guess that EFH 1 would not have the correct viscosity for use in seals. **Q: What is the size of the nanoparticles in nm? Can you wash off the oil and resuspend in water?** A: i don't remember what the size was, although 4 nano meters comes to mind. If you removed the oil and tried to suspend them in water, the particles would oxidize(being exposed to oxygen) and would gather together into redish clumps. All the smooth fluidity would be no more. **Q: Is this an authentic ferrotec fluid? what is the model number for it? amgxxx emgxxx etc etc etc** A: Yes, .. this efh1... part number is 92u40000000 / lot number v121021a.. this educational FF.. not for speakers etc ## Customer Reviews ### ⭐⭐⭐⭐⭐ High-quality pharaoh fluid for the best price you’re going to find anywhere. *by M***E on February 12, 2025* This is an awesome gift for anyone who enjoys science. I bought this for an experiment which it worked perfectly for, but I have ended up using the extra just to play with. It is incredibly interesting, and educational. All you need is a strong neodymium magnet, and a clear container to put it in. The only issue/problem that I have with it applies to any Ferrofluid, & that is that it is incredibly messy, so you need to either keep it contained, or put down some newspaper, and wear rubber gloves when using it. all things considered, the size of the bottle you get for the price & the overall fun and educational Experience Make it well worth the price. ### ⭐⭐⭐⭐⭐ Good buy *by M***O on August 25, 2025* Tons of fun and a good solution for projects. ### ⭐⭐⭐⭐ Terrific science tool *by A***G on September 3, 2015* Cool stuff but make sure you're covered in case you splash some out of the jar ## Frequently Bought Together - Applied Magnets Ferrotec Ferrofluid 4 oz 120 ml bottle Great for Sc - CMS Magnetics Magnetic Ferrofluid for Fun 2 OZ. Packed with Gloves and Dropper - SPACECARE Magnetic Iron Powder for Magnet Education Iron Filing Jar (12 Ounces) with Shaker lid --- ## 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.tn/products/10379316-4-oz-120-ml-magnetic-ferrofluid-science-bottle-interactive-liquid](https://www.desertcart.tn/products/10379316-4-oz-120-ml-magnetic-ferrofluid-science-bottle-interactive-liquid) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-16*