--- product_id: 154586695 title: "Borosilicate 3.3 Glass Graduated Conical Erlenmeyer Flask for Laboratory (50ml, 2 in a pack)" brand: "rocwing" price: "€ 20.97" currency: EUR in_stock: true reviews_count: 8 category: "Rocwing" url: https://www.desertcart.hr/products/154586695-borosilicate-3-3-glass-graduated-conical-erlenmeyer-flask-for-laboratory store_origin: HR region: Croatia --- # Precise white graduation markings Heat & thermal shock resistant Borosilicate 3.3 ultra-durable glass Borosilicate 3.3 Glass Graduated Conical Erlenmeyer Flask for Laboratory (50ml, 2 in a pack) **Brand:** rocwing **Price:** € 20.97 **Availability:** ✅ In Stock ## Summary > 🧪 Elevate your lab game with flasks that withstand the heat and the pressure! ## Quick Answers - **What is this?** Borosilicate 3.3 Glass Graduated Conical Erlenmeyer Flask for Laboratory (50ml, 2 in a pack) by rocwing - **How much does it cost?** € 20.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/154586695-borosilicate-3-3-glass-graduated-conical-erlenmeyer-flask-for-laboratory) ## Best For - rocwing enthusiasts ## Why This Product - Trusted rocwing brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Robust, sturdy design trusted by professionals for years of reliable use—because your work deserves the best. - • **Certified Safety:** SGS UK tested and BS 6748:1986 compliant, guaranteeing food contact safety and peace of mind in every experiment. - • **Lab-Grade Durability:** Engineered from premium Borosilicate 3.3 glass for unmatched heat and thermal shock resistance—no cracks, no compromises. - • **Precision Measurement:** Clear, white graduation markings and note-writing display ensure flawless accuracy every time you measure. - • **Versatile Capacity Options:** Available in multiple sizes with uniform or advanced thicker walls, tailored for both routine and high-demand lab tasks. ## Overview This 50ml Borosilicate 3.3 glass Erlenmeyer flask from Rocwing offers superior heat and thermal shock resistance, precise white graduation markings, and SGS UK certification for food contact safety. Designed with a uniform wall for durability, it’s perfect for professional labs and brewing alike, ensuring reliable, long-lasting performance. ## Description Borosilicate 3.3 Glass, 50/100/250/500/1000 with standard uniform wall version, 2000/3000/5000 with advance uniform wall, slightly thicker, heat and thermal shock resistant, white graduation markings, white note writing display. SGS UK tested, all Rocwing glassware in compliance with BS 6748:1986 (Food Contact Safe) Review: Very good quality - Can take boiling liquid and subsequently crash cooled without cracking. Very robust and the markings are very clear. Review: good solid flask - This is very sturdy, good quality glassware and I am confident it will survive for many years of brewing, perfect for making up yeast starters. ## Features - Borosilicate 3.3 Glass, Heat and Thermal Shock Resistant - 50/100/250/500/1000ml flask with standard uniform wall - 2000/3000/5000ml flask with advance uniform wall, slightly thicker - White graduation markings, white note writing display - SGS UK tested, all Rocwing glassware including beakers, flasks and cylinders in compliance with BS 6748:1986 (Food Contact Safe) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07K6PCZGB | | Best Sellers Rank | 27,530 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 25 in Lab Flasks | | Bottom Shape | Round | | Bottom shape | Round | | Brand | Rocwing | | Capacity | 50 Millilitres | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 400 Reviews | | Graduation Interval | 50 Millilitres | | Graduation interval | 50 Millilitres | | Manufacturer | HuiDa | | Material | Glass | | Material Type | Glass | | Specification Met | SGS food contact safe | | Specification met | SGS food contact safe | ## Product Details - **Bottom shape:** Round - **Brand:** Rocwing - **Capacity:** 50 Millilitres - **Graduation interval:** 50 Millilitres - **Manufacturer:** HuiDa - **Material:** Glass - **Specification met:** SGS food contact safe ## Images ![Borosilicate 3.3 Glass Graduated Conical Erlenmeyer Flask for Laboratory (50ml, 2 in a pack) - Image 1](https://m.media-amazon.com/images/I/51XYfWBQfEL.jpg) ![Borosilicate 3.3 Glass Graduated Conical Erlenmeyer Flask for Laboratory (50ml, 2 in a pack) - Image 2](https://m.media-amazon.com/images/I/31PmXhVjEUL.jpg) ![Borosilicate 3.3 Glass Graduated Conical Erlenmeyer Flask for Laboratory (50ml, 2 in a pack) - Image 3](https://m.media-amazon.com/images/I/51muhQNfX9L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good quality *by K***S on 17 September 2024* Can take boiling liquid and subsequently crash cooled without cracking. Very robust and the markings are very clear. ### ⭐⭐⭐⭐⭐ good solid flask *by R***D on 3 October 2023* This is very sturdy, good quality glassware and I am confident it will survive for many years of brewing, perfect for making up yeast starters. ### ⭐⭐⭐⭐⭐ Great for making yeast starter *by J***R on 28 December 2023* Arrived well packaged inside a bubble wrap bag and cardboard box. I'm using it with a magnetic stir plate to make yeast starters for my homebrew. Most brewers use a 2l conical flask for their starters but I decided the 1l was sufficient for the styles of beer I brew. Very happy with my purchase so far. Hopefully it will last me many years. --- ## 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.hr/products/154586695-borosilicate-3-3-glass-graduated-conical-erlenmeyer-flask-for-laboratory](https://www.desertcart.hr/products/154586695-borosilicate-3-3-glass-graduated-conical-erlenmeyer-flask-for-laboratory) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-06*