--- product_id: 75054259 title: "StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml" brand: "stonylab" price: "₨1481" currency: SCR in_stock: true reviews_count: 6 category: "Stonylab" url: https://www.desertcart.sc/products/75054259-stonylab-glass-500ml-heavy-wall-single-neck-round-bottom-flask store_origin: SC region: Seychelles --- # Durable borosilicate glass Max 450°C heat resistance 24/40 standard taper joint StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml **Brand:** stonylab **Price:** ₨1481 **Availability:** ✅ In Stock ## Summary > 🧪 Elevate your lab game with the flask that means business! ## Quick Answers - **What is this?** StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml by stonylab - **How much does it cost?** ₨1481 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/75054259-stonylab-glass-500ml-heavy-wall-single-neck-round-bottom-flask) ## 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 - • **Trusted Quality:** Backed by a 1-year limited warranty and top-rated by 110+ professionals worldwide. - • **Generous Capacity:** 500ml volume ideal for versatile reactions, distillations, and mixing tasks. - • **Thermal Toughness:** Withstands rapid temperature shifts up to 140°C without cracking—built for intense lab work. - • **Premium Durability:** Crafted from borosilicate glass engineered to resist harsh chemicals and thermal stress. - • **Precision Compatibility:** Seamlessly connects with all 24/40 lab apparatus for flawless setups. ## Overview The StonyLab 500ml Round Bottom Flask features a 24/40 standard taper outer joint for universal compatibility, constructed from durable borosilicate glass that endures up to 450°C and rapid temperature changes of 140°C. Perfect for professional lab reactions, distillations, and heating, it combines reliability with a 1-year warranty and strong user approval. ## Description Product Description Round Bottom Flasks - More Choices 24/40 19/22 Short Neck Long Neck 2 Neck 3 Neck Review: Excellent - Item as described, excellent condition and excellent shipping Review: Passt - Lieferung und Produkt in Ordnung! ## Features - This flask widely used in laboratory settings including reactions, distillation processes, mixing, and heating operations - Engineered with 24/40 standard taper outer joint, ensuring connection with compatible apparatus, 500 ml capacity - Crafted from durable borosilicate glass, it delivers outstanding resistance to harsh and sudden temperature fluctuations - Designed for reliable performance with a maximum working temperature of 450°C and can withstand instantaneous temperature differences up to 140°C - 1-year limited manufacturer warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B076GPMWM6 | | Best Sellers Rank | 83,566 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 79 in Lab Flasks | | Bottom Shape | Round | | Bottom shape | Round | | Brand | stonylab | | Capacity | 500 Millilitres | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 110 Reviews | | Graduation Interval | 500 Millilitres | | Graduation interval | 500 Millilitres | | Item Weight | 285.1 Grams | | Manufacturer | StonyLab Scientific | | Manufacturer Part Number | US-RBF-1Neck-Glass-500ml | | Material | Glass | | Material Type | Glass | | Model Number | SL000666 | ## Images ![StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml - Image 1](https://m.media-amazon.com/images/I/51ewbaeqZPL.jpg) ![StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml - Image 2](https://m.media-amazon.com/images/I/51V3lZw1S5L.jpg) ![StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml - Image 3](https://m.media-amazon.com/images/I/51SBg5DVN7L.jpg) ![StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml - Image 4](https://m.media-amazon.com/images/I/51me5fSQgwL.jpg) ![StonyLab Glass 500ml Heavy Wall Single Neck Round Bottom Flask RBF, with 24/40 Standard Taper Outer Joint – 500ml - Image 5](https://m.media-amazon.com/images/I/71Zde2bWcwL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Can this flask be used with a rotary evaporator?** A: Yes, it is like any round bottom flask with a 24/40 joint. I gotten a number of items from Stony Labs and they are all good quality. **Q: The standard 24/40 clips do not work with these. Can you recommend what will work please?** A: Dear Customer, Here it the clip link for your reference: https://www.amazon.com/dp/B07JM8QPXQ?ref=myi_title_dp Thanks, StonyLab **Q: What size clip is needed for these heavy walled flasks? I purchased the green stony lab clips and they are just the standard 24/40 size.** A: The 24/40 clips should work fine. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by A***R on 18 November 2019* Item as described, excellent condition and excellent shipping ### ⭐⭐⭐⭐⭐ Passt *by R***. on 26 March 2019* Lieferung und Produkt in Ordnung! ### ⭐⭐⭐⭐⭐ Super recue en bonne état *by A***C on 23 July 2023* Chimie en herbes Livraison rapide merci --- ## 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.sc/products/75054259-stonylab-glass-500ml-heavy-wall-single-neck-round-bottom-flask](https://www.desertcart.sc/products/75054259-stonylab-glass-500ml-heavy-wall-single-neck-round-bottom-flask) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-08-02*