--- product_id: 11012548 title: "250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2)" brand: "karter scientific" price: "€ 64.35" currency: EUR in_stock: true reviews_count: 13 category: "Karter Scientific" url: https://www.desertcart.pt/products/11012548-250ml-volumetric-flask-3-3-boro-glass-class-a-ground store_origin: PT region: Portugal --- # Ground glass stopper seal 3.3 borosilicate glass ±0.15 ml precision 250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2) **Brand:** karter scientific **Price:** € 64.35 **Availability:** ✅ In Stock ## Summary > 🧪 Elevate your lab game with precision and style! ## Quick Answers - **What is this?** 250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2) by karter scientific - **How much does it cost?** € 64.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/11012548-250ml-volumetric-flask-3-3-boro-glass-class-a-ground) ## Best For - karter scientific enthusiasts ## Why This Product - Trusted karter scientific brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Perfected:** Class A accuracy with ±0.15 ml tolerance ensures your measurements never miss the mark. - • **Trusted & Certified:** Meets ASTM and ISO 1042 standards, giving you confidence in every experiment. - • **Lab-Ready Convenience:** Flat bottom design offers stable placement, minimizing spills and maximizing workflow efficiency. - • **Secure Seal, No Spills:** Ground glass stopper guarantees airtight closure, preserving sample integrity every time. - • **Durability Meets Clarity:** Crafted from premium 3.3 borosilicate glass for superior chemical resistance and long-lasting clarity. ## Overview The Karter Scientific 250ml Class A volumetric flask, made from high-quality 3.3 borosilicate glass, delivers ±0.15 ml accuracy with a flat bottom and ground glass stopper. Certified to ASTM and ISO standards, this pack of two flasks ensures reliable, spill-resistant measurements for professional labs. ## Description Karter Scientific Class A Volumetric Flasks are manufactured from high quality inert 3.3 borosilicate glass and meet the tolerances requirements as established by ASTM E-694 - ASTM E-542 - and ASTM E-288. Flat bottom. Volumetric flasks provide improved lab convenience, broad selection and precise volume measurement. Accuracy limits conforms to ISO 1042 Laboratory Glassware-One mark volumetric flasks. With one permanent circular mark. Printed with fused-on enamel color, resistant to most acid and alkaline solutions. Calibration is based on the poured in volume ("In") at a +20°C reference temperature. Review: Very good quality - Comes in good packaging so it shouldn’t break. Exactly what I needed. Review: Útil - El producto es fiel a lo ofrecido ## Features - Class A - O.D. x Height(mm): 81 x 225 - Tolerance(+/-ml): 0.15 - Flat Bottom - Ground Glass Stopper ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B006UKI5A6 | | Best Sellers Rank | #46,288 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Lab Volumetric Flasks | | Bottom Shape | Round | | Brand | Karter Scientific | | Brand Name | Karter Scientific | | Capacity | 250 ml | | Customer Reviews | 4.4 out of 5 stars 190 Reviews | | Graduation Interval | 0.15 ml | | Manufacturer | Karter Scientific | | Material | Borosilicate Glass | | Material Type | Borosilicate Glass | | Model Number | 213W6 | | Number of Items | 2 | | Part Number | 213W6 | | Shape | Cylinder | | Specification Met | Astm | | UPC | 817556011493 | | Unit Count | 2 Count | ## Product Details - **Bottom Shape:** Round - **Brand:** Karter Scientific - **Capacity:** 250 Milliliters - **Graduation Interval:** 0.15 Milliliters - **Material:** Borosilicate Glass ## Images ![250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2) - Image 1](https://m.media-amazon.com/images/I/517sC+UQ+2L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: What is the stopper size?** A: The stopper size is 12/18 Ts medium. **Q: Do they come with the certificate?** A: Hello, No, I'm sorry they do not. Customer Service **Q: What are the dimensions** A: Height is 7.5 inches, base is 2.5 inches. **Q: what is the diameter of the flask at the widest point?** A: 3.95 inches is the outside diameter of the flask at its widest point, as measured by digital calipers. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good quality *by R***E on June 1, 2026* Comes in good packaging so it shouldn’t break. Exactly what I needed. ### ⭐⭐⭐⭐⭐ Útil *by A***R on July 5, 2026* El producto es fiel a lo ofrecido ### ⭐⭐⭐⭐⭐ Great for the price *by M***T on January 26, 2014* I've been using this for a few months now and have had no problems with cracking even with major sudden temperature changes. It's not super heavy duty, but I'm not a heavy duty chemist. It's sturdy enough for regular casual use, and great for making and storing simple syrup! ## Frequently Bought Together - 250ml Volumetric Flask, 3.3 Boro Glass, Class A, Ground Stopper, Karter Scientific 213W6 (Pack of 2) - VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified - moveland Plastic Graduated Cylinders and Beakers with 5 Pipettes, 10ml 25ml 50ml 100ml Cylinders, 50ml 100ml 250ml 500ml 1000ml Beakers, Ideal for DIY and Kids Science Lab --- ## 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.pt/products/11012548-250ml-volumetric-flask-3-3-boro-glass-class-a-ground](https://www.desertcart.pt/products/11012548-250ml-volumetric-flask-3-3-boro-glass-class-a-ground) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-14*