Top 6 Best Lab Boiling Flasks

4pcs of 250ml 8.45oz Boiling Flasks. Flat Bottom and short neck, without graduation. Borosilicate 3.3 glass material to prevent cracking. Uniform wall thickness is suited for heating, geometry permits very uniform heating. 5Boiling Flask is used in laboratory for more prolonged boiling of liquids.

Capacity 500ml. Height 172mm. Outside Diameter 101mm. 3.3 Borosilicate Glass. Long Neck.

Boiling Flask made of high quality, heavy duty, 3.3 borosilicate glass.. 500mL Capacity.. As per DIN ISO 4797.. Interchangeable joint size 2429. Measures 6 tall and 4.5 wide at its widest point..

Flask made of heavy duty borosilicate glass.. 50ml Capacity. Long neck. Stopper not included.

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.

Package Dimensions 28.194 cms L x 21.336 cms W x 17.78 cms H. Product Type Flask. Package Quantity 1. Country Of Origin United States.

Flask made of heavy duty borosilicate glass.. 1000ml Capacity. Narrow neck. Stopper not included.

500ml Flat Bottom Boiling Flask. 1 Single Neck. Made of high quality glass. 2440 Center Joint. StonyLab ensures high quality products and premium customer service if received damaged, please contact us immediately we will solve it until satisfied.

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 500mL,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..