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Your cart is empty.A convenience pack containing one each of the most popular sizes of Cat. No. 4980 series flask. Designed for the low volume user, a case contains one each of five sizes: 50 mL, 125 mL, 250 mL, 500 mL, and 1L. Packaged in a partitioned carton for safe transit and storage. Rubber Stoppers Included
The Chef
2025-07-25 17:15:30
Don’t even waste your time with the cheap Chinese Borosilicate. If they can send it without it getting broken(speaking directly at you Karter and Stony), it’s probably not worth spending your money on. Rippled bottoms and chipped glass constantly. Pyrex, American or German, is way better than anything else offered on Amazon. Spend more, waste less. Chinese glass is full of flaws. You can throw the box around on the floor, and these won’t break. Do better, Chinese suppliers, because you’re not even close.
Wayne C.
2025-06-25 18:02:48
Good quality but the I will not be using the rubber stoppers iwith my fermentation due to their strong odor. I will replace them with cork.A good selection of sizes in the order is perfect for what I need them for.
Phillip
2025-06-24 17:19:52
I've always been able to trust Pyrex lab equipments and this is no exception.
samuel
2025-06-02 13:42:57
This is the second one I received like this
R Norris
2025-05-29 14:01:19
I bought this set for some homebrewing stuff, so I don't really need accuracy or temperature tolerance. Overall, the set works well for mixing yeast starters, nutrients, and fining agents. My only complaint is that a couple of the stoppers I got with this set were too small for the larger flasks, and they fall right into the two larger flasks. The smaller sized flasks have correctly-sized stoppers, though.
Al
2025-02-28 18:14:22
Nice quality glass so far.
Taako
2025-02-14 09:06:50
It's the all capital Pyrex logo, and they've stood up to microwaving and the dumb non-scientific stuff I use them for.
Jason C.
2025-01-06 12:14:02
Definitely worth the price I bought a few other flasks and had them break from thermal shock these have never had any issues.
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