Great products and great deals too. Used them 4 months so far to make media and no sign of crack after multiple times of autoclaving.Will buy more.

good

The **Cole-Parmer Essentials Glass Erlenmeyer Flask** is a reliable and versatile laboratory tool with a 2000 mL capacity. This flask is made from high-quality borosilicate 3.3 glass, known for its exceptional durability and thermal resistance. It can handle extreme temperatures ranging from -50°C to 550°C, making it suitable for a variety of laboratory applications such as heating, cooling, and autoclaving.### Key Features:- **Heavy-duty Rim:** The flask features a thickened beaded rim that provides additional strength and reduces the risk of breakage during handling, making it robust for everyday lab use.- **Clear Graduations:** Easy-to-read markings on the side allow for precise measurements and accurate results in experiments or routine work.- **Thermal Resistance:** With its wide temperature range, the flask can be used in demanding environments without the risk of cracking or thermal shock.- **Autoclavable:** It is designed to withstand autoclaving, ensuring it can be safely sterilized between uses.This flask is ideal for chemical mixing, solution storage, or general lab work. Its durability and reliable performance make it a great choice for professionals and students alike. This product is sold as a single unit, offering a cost-effective solution for labs looking for long-lasting glassware.

Arrived on time and packed well. It is clean and looks pro. The bottom is nice and flat and is slightly concave. I think it could be thicker side walls. The top opening, neck and bottom are thicker than the side walls. Great deal for the price. Made in USA.

Purchased for making yeast starters for my homebrewing. Have used it directly on my stove top and dunked it straight in to ice water several times and its still in perfect condition. Cleans up perfectly with PBW or oxiclean. Would highly recommend and purchase again if ever necessary.