Product Overview

All of our flasks are made from borosilicate type glass which is nice because they can be transferred directly from heat to ice and not crack like normal glass. (We do not recommend the use of an electric element. If this cannot be avoided, we recommend using a larger pot as a hot water bath on the stove.)

Great Flask for yeast culturing.

Recommended Process for Use of Flask:
Double Boiler Method

It is important for your safety to heat water in the flask with a heat source that distributes heat evenly. Our manufacturer has confirmed that direct heat to the glass can break down its integrity and break if the heat source doesn't distribute evenly.

We recommends using the "double boiler method." This process involves using a boiling water bath on the outside of the flask to heat up the water inside the flask. All you need is a kettle 3 gallons or larger. This process is much safer and efficient. If the flask should break or boil over, your kettle will be there to collect the contents, thus keeping your stove clean and keeping you away from potential harm.

In the lab world, these flasks are known as "Student Grade". A great flask for making yeast starters! (Student grade is not the highest grade flask and will have minor defects)

Shipping

• FREE Shipping on most over $75 shipping within the contiguous U.S.*
• ExtraCare Glass items' shipping is calculated at checkout.
• Most in-stock orders ship the following business day.
• Standard ground shipping typically takes 2-5 business days in transit
• please note: we are experiencing delays in some fulfillment centers due to COVID-19. 

FedEx / UPS / USPS Shipping:

• FREE over $75*
• Flat rate $7.95 under $75*
• 2-5 business days in transit
• Does not require Signature

*Free & Flat Rate shipping is only available in the contiguous U.S. Some exclusions apply, including ExtraCare Glass items, special order items, and non-standard items.

Returns

We're committed to your total satisfaction. You may return your items within 30 days of their delivery. Please follow the instructions below.  

Return Eligibility:     

• Returns must be in brand new condition.     
• Items must be returned in their original packaging.     
• Items must include all parts, pieces, and manuals.     
• Items cannot be assembled or used in anyway. 

Restocking fees are typically not applied, however, in some cases a restocking fee not to exceed 30% will be withheld from your returned merchandise total.  Shipping costs are non-refundable.

If you have any further questions, please do not hesitate to contact us!