Laboy Glass Single Neck Flat Backside Boiling Flask 250mL with 24/40 Joint Heavy Wall Receiving Equipment Natural Chemistry Lab Glassware
$12.73
Value: $12.73
(as of Feb 21, 2025 00:34:00 UTC – Particulars)
The flat backside flask is probably going the opposite spherical backside flask however with a flat backside permitting it standing up flat floor because the flask can sit upright by itself. Capability of 250mL with 24/40 glass floor taper joint. It may be utilized in heading throughout distillation, they aren’t as sturdy as spherical backside flasks for heating higher than Erlenmeyer flask which has have the sharp and susceptible corners . Laboy glass flasks are heavy wall design, made by hand-blowing to make sure uniform wall thickness, and manufactured from high-quality borosilicate glass and annealed at 800 diploma Celsius, may be heated immediately in an open flame and might stand up to typical laboratory thermal variations in Chemistry processes like heating and cooling.
Package deal Dimensions : 6 x 3.6 x 3 inches; 0.04 ounces
Merchandise mannequin quantity : HMF010104
Date First Out there : Might 11, 2015
Producer : Laboy
ASIN : B00XHHDH4Y
DESIGN—-The flat backside flask is probably going the spherical backside flask however with a flat backside permitting it standing up flat floor because the flask can sit upright by itself,moderately than in a flask clamp or cork stand,very best for utilizing as a receiving flask.When underneath heating,it’s not sturdy as spherical backside flask however higher than Erlenmeyer flask which have the sharp and susceptible corners.The brief neck is with a regular taper joint,which may connect the lab glassware with commonplace tape joint.
WIDELY USED—–A flat backside flask is utilized in chemistry laboratory for experiments involving amassing and measuring liquids, mixing solvent In a equipment,the flat backside flasks can connect to a adapter,liebig or allhnn condenser,take off adapter as a or receiving flask.In a soxhlet extraction, a flat backside attaches the soxhlet extractor used as boiling and receiving flask.
DIMENSIONS—–This flat backside flask has a capability of 250mL,the brief neck is with a 24/40 commonplace taper feminine joint, which is interchangeable ,may be connected to any jointed glassware with a 24/40 male joint.
HEAVY WALL —Laboy glass flasks are heavy wall design , made by hand-blowing in response to ASTM E438 ,manufactured from high-quality borosilicate glass and annealed at 800 diploma Celsius ,may be heated immediately in an open flame and might stand up to typical laboratory thermal variations in Chemistry processes like heating and cooling,sturdy and reusable.
Clients say
Clients recognize the flask for its good high quality and worth for cash. They discover it thick and well-made, an ideal merchandise that matches with the units Laboy provides. The glassware is described as good and thick, very well-made, and supply for glass and equipment.
AI-generated from the textual content of buyer evaluations

Laboy Glass Single Neck Flat Backside Boiling Flask 250mL with 24/40 Joint Heavy Wall Receiving Equipment Natural Chemistry Lab Glassware
$12.73
a. rydzynski –
Nice flask.
A little pricey but I love Laboy’s glassware. Not kemtech-thick but equally free of defects.
william –
great value
I like everything I get from laboy. some other brands have fitting issues and often wont fit my clips correctly. not so with laboy. they are now my go-to for all glassware. If laboy has it, I’ll get it from them.
gc Langis –
Good deal
Great deal for the money got here quick and unbroken!
Amazon Customer –
Good source for glass and accessories.
Good glass. Joint is well ground and fits tight. Well packed. Always clean and never broken.
C Zands –
Costly
It’s a perfect item that matches with the sets Laboy has to offer, if only it was cheaper buying them separately than all on one offering. ð
Daniel Earhart –
Good, thick flasks
They are a great way to expand your Laboy set if you keep a few things going on at the same time. I was pleasently suprised at how having everything compatible in terms of the ground glass joints increased the overall flexibility of my set. This is because, unlike the specialty round-bottom or spherical boiling flasks, these flat bottom flaskes can be used as temporary storage as well. I use my other glassware much less freqentlynow.I do think that the outer edge if the bottom could be a bit harder. It can be a bit difficult to ensure that your flask is sitting perfectly flat on the hot plate when you are trying to set up a full distillation configuraton. They can very easily roll to the side a little bit, without being noticed, while getting everythign secured. That’s the only reason I gave it a 4.The reason I didn’t give them a 5 is that the the shape of the bottom __ __ / _____/ /
Amazon Customer –
Perfect for diy ejuice
Mixed 240 ml at 130°F. Bottom is slightly concaved but has a flat spot in the center for the stir bar. Worked excellent and is short enough to have standard digital thermometer in while mixing. Shipping was a bit slow when you’re used to prime shipping, but worth the wait.
Jetsy –
Nice
Good quality for the price. Never had problems with Laboy glass unlike other overseas manufacturers. Would order again if I needed more. Average to fast shipping time considering how far it has to travel.
Kirsty –
Nice thick glass came in one piece, quick delivery, functions great
Amazon Customer –
Excellent product.
Scott –
great price and good quality