Glass Media Bottle 1000ml Round Storage Bottles 3.3 Borosilicate Glass Regent Bottles with PP GL45 Screw Cap 1 Piece...

The bottles performed perfectly fine for my needs. It pours solution well, no drip. It works fine with a magnetic stirrer, hot plate, and sterilizer. Handles being rocked around a little at high heat in my sterilizer, with no obvious loss in bottle integrity.

Points: +Withstood pressure cooking at 121C and 15psi for 30 minutes +250 mL is a great size for at home growth media +Sturdy lid, removable seal ring +Lower profile easily fit in my smallest 8qt pressure cooker +Affordable Summary: I grow my own gourmet mushrooms so I find I tend to collect science supplies over the years. Ive learned that one of the best ways to keep my harvests coming is by taking samples from my best harvests and regrowing them using nutrient growth media. So far Ive used this to make potato dextrose, malt yeast extract, and light malt yeast extract nutrient broth. I havent been using this very much yet so well see how it holds up in years. Overall, its working as any media bottle should after 3 sterilization cycles.

This glass media bottle is of superb quality. I was impressed by it, especially considering its price of $19.99 at the time of purchase. It competes well with the pricier Pyrex versions available from Millipore Sigma. The bottle arrived meticulously clean, tightly sealed with its lid, and well-packaged to prevent breakage. I am delighted with this purchase and am considering buying more. While a slightly lower price would be great, these bottles unquestionably seem to be made of Borosilicate glass and are akin to the much more expensive options provided by a leading vendor. Five stars! If you're willing to pay $20 for it then you won't be disappointed by what arrives in the mail