--- product_id: 248066112 title: "Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml)" brand: "stonylab" price: "$194.32" currency: USD in_stock: true reviews_count: 7 category: "Stonylab" url: https://www.desertcart.us/products/248066112-borosilicate-glass-2-neck-round-bottom-flask-rbf-with-24 store_origin: US region: United States of America --- # Heat resistant up to 200°C Borosilicate glass for chemical stability Dual 24/40 standard taper joints Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) **Brand:** stonylab **Price:** $194.32 **Availability:** ✅ In Stock ## Summary > ⚗️ Elevate your lab game with flawless precision and style! ## Quick Answers - **What is this?** Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) by stonylab - **How much does it cost?** $194.32 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/248066112-borosilicate-glass-2-neck-round-bottom-flask-rbf-with-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 - • **Clear Visibility:** Crystal-clear glass for real-time monitoring of your experiments - • **Dual Access Necks:** Two 24/40 standard taper joints for versatile lab setups and multitasking - • **Precision Heat Control:** Round bottom design ensures even heating for flawless reactions - • **Satisfaction Guaranteed:** Prompt replacement if damaged—because your workflow can’t wait - • **Durable Borosilicate Glass:** Engineered to withstand high temperatures and chemical exposure without compromise ## Overview This 1L Borosilicate Glass 2 Neck Round Bottom Flask features dual 24/40 standard taper joints for versatile lab applications. Crafted from heat-resistant borosilicate glass, it withstands temperatures up to 200°C while providing excellent chemical stability and clear visibility. Ideal for professionals seeking reliable, durable labware with guaranteed satisfaction. ## Description Product Description 2 Neck Round Bottom Flask Crafted from high-quality Borosilicate Glass, it boasts excellent heat resistance and chemical stability. The round-bottom design facilitates even heating, providing users with clear visibility for observation and operation. Product Comparison 1 Neck Round Bottom Flask 3 Neck Round Bottom Flask Review: Worth the money - Always top quality equipment and is delivered very fast Review: Low quality for the price - I've had 2 of these now and both broke after a single use. ## Features - Round Bottom Flask - 2 Angled Neck - 24/40 Center Joint in the central and side - Made of borosilicate glass; maximum withstand temperature 200°C - Warranty: If received damaged, please contact us immediately; we will solve it until satisfied ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HG1H1MX | | Best Sellers Rank | 33,269 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 29 in Lab Flasks | | Bottom Shape | Round | | Bottom shape | Round | | Brand | stonylab | | Capacity | 1000 Millilitres | | Country Of Origin | China | | Customer Reviews | 4.2 out of 5 stars 162 Reviews | | Graduation Interval | 1000 Millilitres | | Graduation interval | 1000 Millilitres | | Manufacturer | StonyLab Scientific | | Manufacturer Part Number | US-RBF-2Neck-Glass-1000ml | | Material | Glass, Polyethylene (PE) | | Material Type | Glass, Polyethylene (PE) | | Model Number | US-RBF-2Neck-Glass-1000ml | | UPC | 843798103580 | ## Product Details - **Material:** PE_(Polyethylene), Glass - **Capacity:** 1000 Millilitres - **Brand:** stonylab - **Bottom shape:** Round - **Graduation interval:** 1000 Millilitres - **UPC:** 843798103580 - **Manufacturer:** StonyLab Scientific ## Images ![Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) - Image 1](https://m.media-amazon.com/images/I/51v3A+Tg59L.jpg) ![Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) - Image 2](https://m.media-amazon.com/images/I/51wE62M4fjL.jpg) ![Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) - Image 3](https://m.media-amazon.com/images/I/51Tb08eiCyL.jpg) ![Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) - Image 4](https://m.media-amazon.com/images/I/51vkYcnD1RL.jpg) ![Borosilicate Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1000ml) - Image 5](https://m.media-amazon.com/images/I/71j41m4ih-L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth the money *by R***K on 26 November 2019* Always top quality equipment and is delivered very fast ### ⭐ Low quality for the price *by S***Y on 31 December 2018* I've had 2 of these now and both broke after a single use. ### ⭐⭐⭐⭐⭐ Great piece. It doubles as art. *by J***L on 4 January 2022* I have paid more for worse Very pleasantly surprised. Arrived nicely packaged,the next day. Presently I have it on the mantle. ## Frequently Bought Together - StonyLab 1000ml Glass 2 Neck Round Bottom Flask RBF, with 24/40 Center and Side Standard Taper Outer Joint - 1L (1 Liter) - StonyLab Thermometer Inlet Adapter with 24/40 Inner Joint, 80mm Height, for Distillation Apparatus - 12 pcs Keck Clips Ground Joints #24, Standard Taper POM for Joints 24/29 and 24/40 --- ## 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.us/products/248066112-borosilicate-glass-2-neck-round-bottom-flask-rbf-with-24](https://www.desertcart.us/products/248066112-borosilicate-glass-2-neck-round-bottom-flask-rbf-with-24) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-21*