Top 10 Best Boiling Flask

DESIGN----The flat bottom flask is likely the round bottom flask but with a flat bottom allowing it standing up flat surface as the flask can sit upright on its own,rather than in a flask clamp or cork stand,ideal for using as a receiving flask.When under heating,it is not durable as round bottom flask but better than Erlenmeyer flask which have the sharp and vulnerable corners.The short neck is with a standard taper joint,which can attach the lab glassware with standard tape joint.. WIDELY USED-----A flat bottom flask is used in chemistry laboratory for experiments involving collecting and measuring liquids, mixing solvent In a distillation apparatus,the flat bottom flasks can attach to a distillation adapter,liebig or allhnn condenser,take off adapter as a distillation or receiving flask.In a soxhlet extraction, a flat bottom attaches the soxhlet extractor used as boiling and receiving flask.. DIMENSIONS-----This flat bottom flask has a capacity of 1000mL,the short neck is with a 2440 standard taper female joint, which is interchangeable ,can be attached to any jointed glassware with a 2440 male joint.. HEAVY WALL ---Laboy glass flasks are heavy wall design , made by hand-blowing according to ASTM E438 ,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,durable and reusable.. HEAVY WALL ---Laboy glass flasks are heavy wall design , made by hand-blowing according to ASTM E438 ,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,durable and reusable..

DESIGN----Round bottom design having spherical bottoms are more resistant to fracturing under vacuum, as a sphere more evenly distributes stress across its surface. A cork stand is needed to keep the round bottom flask upright,or heated by the water bath ,oil bath or sand bath.Comparing to the single neck round bottom flask,this 2 neck flask featured an angled neck with standard taper joint as an extra opening.. WIDELY USED---The 2 neck round bottom flask is widely used in the organic chemistry process like distillation, reflux ,extraction,reaction etc.In a distillation apparatus,the 2 neck round bottom flask used as the distillation flask,the straight neck attaches a 3 way distillation adapter or a distillation columnin fractional distillation,the other neck can be used to connect a thermometer adapter ,bleeding tube, or additional funnel.. DIMENSIONS-----This 2 neck round bottom flask has capacity of 1000mL, with 2440 center joint 2440 side joint,attaching any lab glassware apparatus with standard taper joint.. HEAVY WALL ---The 2 neck flask is heavy-wall designed , made by hand-blowing according to ASTM E438 ,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,durable and reusable.. 100 90 DAY MONEY BACK GUARANTEE If you are not satisfied for any reason, simply return for a full refund, no questions asked. You have nothing to lose.Please also kindly undertand glassware is fragile, even if we pack them carefully,it may be broken during the shipment ,if you receive the items in broken status,don't hesitate to contact us ,we will arrange free replacement or full refund..

Capacity - 50ml boiling flasks, one neck boiling flask with 1922 standard outer joint. Premium Material - Made of G3.3 borosilicate glass, high hardness, strength, toughness and low inflation rate. Heat Resistance - 520 resistance to high temperature, heavy wall, high transparency, easy to observe the change of solution. Structural Design - Round bottom ensure uniform heating, with spherical bottoms,this RBF is more resistant to fracturing under vacuum, improve work efficiency and guarantee security. High Chemical Stability - Acid and alkali corrosion resistance and various organic solutions, widely used in organic chemistry,in a distillation or vacuum distillation apparat.

Capacity 250ml. Height 138mm. Outside Diameter 85mm. 3.3 Borosilicate Glass. Long Neck.

Package contains 1 Pack 500ml Single Neck Flat bottomed flask.. Standard size With 2440 Standard Taper Outer Joint, capacity is 500ml.. Widely used Can be connected to a distillation adapter for collecting and measuring liquids.. Durable Made of high-quality borosilicate glass, it can be directly heated in an open flame, high temperature and low temperature resistance, and can be reused.. Flat-bottomed flask The flask can stand upright on a flat surface by itself, rather than on a flask holder or cork holder. Can be connected to laboratory glassware, with standard tape joints..

Premium Quality This boiling flask pack is built with high-quality borosilicate glass, heat-resistant, sturdy, and durable. It is heavy-wall designed, made by hand blown process to ensure uniform wall thickness.. Excellent Sealing With the 2440 standard taper ground joint, the round flask has excellent sealing and can be tightly combined with other glassware. It comes with two Keck clips to prevent the joints from separating.. Uniform Heating With the spherical bottom, this round glass flask has a larger heating surface than the flat bottom flask, so that the liquid can be heated or boiled more evenly. Its surface stress is also uniformly distributed.. Clear Transparent The round borosilicate has a clear and transparent wall without protrusion, easy to observe the experimental phenomena, and liquid changes. The precise specification is marked for classification.. Extensive Application The round bottom glasses are indispensable in the distillation experiment and reflux process, which can withstand typical laboratory thermal variations in chemistry processes like heating and cooling..

STANDARD SIZE--- This round bottom flask designed with 2440 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 250mL.. 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 ,its used a a distillation flask and receiving flask with a glass condenser and some adapters like the 14 way distillation adapter,take-off adapterIn a reflux process,its 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.

Volume 250ml 8.5oz. Material Made of high quality 3.3 Borosilicate glass to prevent cracking. Appearance Flat Bottom that can be set on a surface, short neck, without graduation. Shape Geometry permits very uniform heating, Uniform wall thickness is suited for heating. Boiling Flask is used in laboratory for more prolonged boiling of liquids.

STANDARD SIZE--- This round bottom flask designed with 2440 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 ,its used a a distillation flask and receiving flask with a glass condenser and some adapters like the 14 way distillation adapter,take-off adapterIn a reflux process,its 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.

Round Bottom Flask. 2 Angled Neck. 2440 Center Joint in the central and side. Made of borosilicate glass.