--- product_id: 53261582 title: "- StonyLab Borosilicate Glass 3 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 250ml" brand: "stonylab" price: "2132716₫" currency: VND in_stock: true reviews_count: 13 category: "Stonylab" url: https://www.desertcart.vn/products/53261582-stonylab-borosilicate-glass-3-neck-round-bottom-flask-rbf-24 store_origin: VN region: Vietnam --- # 24/40 standard taper joints for versatile connections high borosilicate glass resists heat & chemicals 3 necks for multi-tool use - StonyLab Borosilicate Glass 3 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 250ml **Brand:** stonylab **Price:** 2132716₫ **Availability:** ✅ In Stock ## Summary > ⚗️ Elevate your lab game with triple-neck precision and rock-solid durability! ## Quick Answers - **What is this?** - StonyLab Borosilicate Glass 3 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 250ml by stonylab - **How much does it cost?** 2132716₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/53261582-stonylab-borosilicate-glass-3-neck-round-bottom-flask-rbf-24) ## Best For - stonylab enthusiasts ## Why This Product - Trusted stonylab brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimal 250ml Capacity:** Perfectly sized for precise heating, mixing, distillation, and reflux tasks in professional labs. - • **Versatile 24/40 Joints:** Standard taper outer joints on center and sides ensure seamless compatibility with most lab glassware. - • **Reliable 1-Year Warranty:** Confidence backed by a full year of coverage—damage? We’ve got you covered promptly. - • **Triple-Necked Efficiency:** Simultaneously connect thermometers, condensers, and more for complex experiments without hassle. - • **Premium Borosilicate Durability:** Crafted from high-grade 3.3 borosilicate glass that withstands acids, alkalis, and extreme temperatures. ## Overview The StonyLab 250ml 3 Neck Round Bottom Flask is a high-quality borosilicate glass vessel designed for advanced chemical lab work. Featuring three necks with 24/40 standard taper joints, it enables simultaneous use of multiple instruments like thermometers and condensers. Its durable 3.3 borosilicate glass resists heat, acids, and alkalis, ensuring long-term stability and reliability. Ideal for heating, mixing, distillation, and reflux, it comes with a 1-year warranty for peace of mind. ## Description StonyLab Borosilicate Glass 3 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 250ml: desertcart.com: Industrial & Scientific Review: 3 necks better then 2 - They work great and good quality. Review: nice glass - as expected, typical size for 3 neck. removed one star because stony lab glass doesn't accept joint clips, the joint ring is too wide. every other brand accepts the normal joint clips. ## Features - Commonly used for heating, mixing, distillation, reflux, and storage in chemical laboratories - Features three necks for simultaneous use of thermometers, condensers, and other lab glassware, making it suitable for complex experimental setups - Constructed from high borosilicate 3.3 glass with excellent transparency, resistance to acids, alkalis, and high temperatures, ensuring long-term stability - 3 Angled Neck; 250ml capacity; 24/40 Center Joint in the central and double sides - Warranty: 1-year coverage period for your peace of mind, if received damaged, please let us know and we will solve it promptly ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B076GQHMF7 | | Best Sellers Rank | #119,713 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Lab Boiling Flasks | | Bottom Shape | Round | | Brand Name | stonylab | | Capacity | 250 Milliliters | | Customer Reviews | 4.3 4.3 out of 5 stars (91) | | Manufacturer | StonyLab Scientific | | Material Type | Glass | ## Product Details - **Bottom Shape:** Round - **Brand:** stonylab - **Capacity:** 250 Milliliters - **Manufacturer:** StonyLab Scientific - **Material:** Glass ## Images ![- StonyLab Borosilicate Glass 3 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 250ml - Image 1](https://m.media-amazon.com/images/I/61qNVnIPVxL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 3 necks better then 2 *by I***I on October 30, 2024* They work great and good quality. ### ⭐⭐⭐⭐ nice glass *by W***T on December 7, 2018* as expected, typical size for 3 neck. removed one star because stony lab glass doesn't accept joint clips, the joint ring is too wide. every other brand accepts the normal joint clips. ### ⭐⭐⭐⭐⭐ Good design, came right on time, solid build. *by B***O on April 2, 2018* This flask did exactly what I needed it for, and it didn't break under the around 400°c I needed to distill mercury. Furthermore, it did withstand the boiling mercury which I was slightly worried about. All in all, a worth buy and I would recommend it to anyone who needs a 500mL 3 neck. ## Frequently Bought Together - StonyLab Borosilicate Glass 3 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint – 250ml - StonyLab Glass 24/40 Erlenmeyer Flask, Borosilicate Glass Heavy Wall Flask with 24/40 Standard Taper Outer Joint, 250ml - StonyLab Borosilicate Glass Graham Condenser with 24/40 Joint 300 mm Jacket Length Lab Glass Condenser --- ## 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.vn/products/53261582-stonylab-borosilicate-glass-3-neck-round-bottom-flask-rbf-24](https://www.desertcart.vn/products/53261582-stonylab-borosilicate-glass-3-neck-round-bottom-flask-rbf-24) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-17*