Features:

  • STANDARD SIZE--- This round bottom flask designed with 24/40 standard taper outer joint,interchangeable,leak-free,comparing to common boiling flask without ground joint, it is convenient,safe,easy-operation in laboratory glassware setup. Capacity of 1000mL.
  • HEAT-RESISTANT DESIGN ---With spherical bottoms,this RBF is more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. Laboy glass flasks are heavy wall designed,made by hand-blowing to ensure uniform wall thickness, made of high-quality borosilicate glass and annealed at 800 degree Celsius ,can be heated directly in an open flame and can withstand typical laboratory thermal variations in Chemistry processes like heating and cooling.
  • WIDELY USED----The round bottom flask is widely used in organic chemistry,in a distillation or vacuum distillation apparatus ,it’s used a a distillation flask and receiving flask with a glass condenser and some adapters like the 14 way distillation adapter,take-off adapter;In a reflux process,it’s used as a reaction flask with a reflux condenser.It is also used as a Distilling flask in rotary evaporators.
  • HIGH QUALITY---Laboy glass condensers are all made of high quality boroslicate glass according to ASTM E438,heavy wall design,durable and reusable.The ground joints are precisely grounded according to US standard.
  • BUY WITH CONFIDENCE----100% 90 DAY MONEY BACK GUARANTEE simply return for a full refund,no question asked
A great piece of lab ware from China.

I recall when breaking glass labware meant an annoying bill from the store room manager, so I was dubious about the quality of chemical glassware coming from China for such low prices. Laboy exceeds my expectations--the glass is of a durable thickness, without ripples or "seeds" or inclusions, the ground glass mates perfectly with my American-made glassware (the grind seems a bit more coarse but to no disadvantage) and even though I haven't stress tested the flask (e.g., pouring liquid nitrogen into a flask at red heat--jeez, just kidding) I have full confidence that Laboy glassware will perform under normal lab conditions to the highest standards.

If you need glassware that just looks and feels like awesome quality--the answer is Laboy

I tend to order SEOH and Laboy most often for a majority of my experiments and products... Laboy isn't what you have probably come expect from a Chinese manufacturer. If you need glassware that just looks and feels like awesome quality--the answer is Laboy.. I love Laboy for their quality. When I need something that I expect to break like beakers I tend to get SEOH (their prices are excellent), but when I get something with the expectation of it lasting a lot of abuse then Laboy is absolutely the way to go. It's worth it to spend a little more on some things this flask is definitely one of those items.

Small flask stands up to the task

Thick enough where they can take some abuse and not break the first time you make a mistake. I waited a few weeks to post my review so that I could use them a few times and I am very pleased with the quality I received.

Sturdy RBF

We routinely use round bottom flask in our lab and I found these RB flask to be of very good quality. It feels sturdy and does not break very easily. Thank you.

I always end up checking Laboy products first before buying glassware now.

I've found everything I've bought from Laboy to be well made and equivalent to the super-expensive stuff you can get from standard places like Fisher and Sigma. I always end up checking Laboy products first before buying glassware now.

Quality

Higher quality than I’m used to. It is about 25% heavier than other 1000ml boiling flasks I have. It just feels more rugged. Definitely would buy again

Gorgeous flask!

Wow, this is way nicer than I expected! Especially considering the low cost. There is one tiny flaw that won't affect performance even slightly, and otherwise this is perfectly made and arrived clean. 99% as good as any Corning glassware I've ordered!

Top quality laboratory glass

There is not much you can say about a Boiling Flask. This is a good one, at a good price. It comes from Asia so you wait a little while to get it. For much of us who order our laboratory supplies a few times a year, this is not a problem.

As described

I love Laboy they're the very best.

good flask

nice thick wall flask, no imperfections

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