10 Best Chemistry Round Flask In The Us - Black Friday 2024
Best Choice1
LABOYLaboy Glass 100mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24/40 Joint Heating Reaction Receiving Flask Organic Chemistry Lab Glassware (Pack of 5)
Main highlights- WIDELY USED----The round bottom flask is widely used in organic chemistry,in a or vacuum apparatus ,it’s used a a flask and receiving flask with a glass condenser and some adapters like the 14 way 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 flask in rotary evaporators.
- 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 100mL.Pack of 5pcs
- 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.
- HEAT-resistance DESIGN ---With spherical bottoms,this RBF is more resistance 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.
9.8Exceptional
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Value for Money2
LABOY12% OffLaboy Glass 1000mL 2 Neck Round Bottom Boiling Flask with 24/40 Center & Side Joints Angled Apparatus Organic Chemistry Lab Glassware
Main highlights- WIDELY USED---The 2 neck round bottom flask is widely used in the organic chemistry process, reflux ,extraction,reaction etc.In a apparatus,the 2 neck round bottom flask used as the flask,the straight neck attaches a 3 way adapter or a column,the other neck can be used to connect a thermometer adapter ,bleeding tube, or additional funnel.
- 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.
- DIMENSIONS-----This 2 neck round bottom flask has capacity of 1000mL, with 24/40 center joint & 24/40 side joint,attaching any lab glassware apparatus with standard taper joint.
- 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.
- 100% 90 DAY MONEY BACK GUARANTEE If you are not satisfied for any reason, simply return for a full, 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.
9.7Exceptional
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3
QWORKQWORK 1000ml Glass 2-Neck Round Bottom Flask with 24/40 Center and Side Standard Taper Outer Joint
Main highlights- Standard Taper Outer Joint: Equipped with a 24/40 standard taper outer joint on both the center and side, this flask ensures secure and leak-free connections with compatible lab apparatus, ensuring reliable experiments.
- Generous 1000mL Capacity: With a capacity of 1000mL, this round bottom flask provides ample space for performing experiments, making it ideal for scientific research, chemical reactions, and more.
- Durable Glass Construction: Crafted with precision from high-quality glass material, this heavy wall round bottom flask ensures durability and long-lasting use.
- Dual Neck Design: Featuring two necks, this flask allows for simultaneous and convenient connections to multiple devices or setups, enhancing versatility in various laboratory applications.
- Angled Neck for Easy Handling: The angled neck design of this flask facilitates easy pouring and transfer of liquids, minimizing the risk of spills and offering improved control during laboratory experiments.
9.6Exceptional
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4
LABOYLaboy Glass 250mL Single Neck Round Bottom Boiling Flask Heavy Wall with 24/40 Joint Heating Distillation Reaction Receiving Flask Organic Chemistry Lab Glassware 2pcs
Main highlights- 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.
- 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 250mL.
- 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.
- 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.
- BUY WITH CONFIDENCE----100% 90 DAY MONEY BACK GUARANTEE simply return for a full refund,no question asked
9.5Excellent
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5
LABOYLaboy Glass Single Neck Flat Bottom Boiling Flask 250mL with 24/40 Joint Heavy Wall Receiving Apparatus Organic Chemistry Lab Glassware (Pack of 4)
Main highlights- WIDELY USED-----A flat bottom flask is used in chemistry laboratory for experiments involving collecting and measuring liquids, mixing solvent In a apparatus,the flat bottom flasks can attach to a adapter,liebig or allhnn condenser,take off adapter as a or receiving flask.In a soxhlet extraction, a flat bottom attaches the soxhlet extractor used as boiling and receiving flask.
- 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.
- DIMENSIONS-----This flat bottom flask has a capacity of 250mL,the short neck is with a 24/40 standard taper female joint, which is interchangeable ,can be attached to any jointed glassware with a 24/40 male joint.
- 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.
9.4Excellent
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6
CopkimCopkim 6 Pack Lab Flask Chemistry Drinking Glasses, 8.5 oz Thick Clear Tumbler Scientific Beaker Mugs Flask for Cocktails Coffee Cold Drinks Novelty Cocktail Glasses Set (Lab Flask)
Main highlights- Sufficient Quantity: you will receive 6 pieces clear beaker flasks about 8.5 oz/ 250ml, 6 pieces stainless steel straws, 6 pieces round silicone coasters in 6 colors, 6 pieces glass stoppers and 1 straw brush; They are enough for you to use and replace in daily life or parties, helping you prepare yummy drinks for your mates and guests
- Quality and Serviceable: made of high borosilicate glass, these science cocktail glasses are solid, reusable and washable, not easy to deform and like real lab flasks, which are durable, heat and cold resistant, can be applied for a wide variety of beverages, such as wine, beer, cocktails, water, coffee, tea and so on
- Proper Size: this glass flask beaker measures about 3.4 inches/ 8.5 cm in bottom diameter and 5.9 inches/ 15 cm in height, have enough room to hold beverages; And the straw is about 8.3 inches/ 21 cm in length, can match the bottle well and is easy for you to drink; The coaster is approx. 3.5 inches/ 9 cm in diameter, appropriate for holding glasses and effectively keeping your table from scratching
- Novelty Design: our lab glass containers have a special and interesting design, can add a fun and quirky sense to your table and are always a conversation starter, which will get most people's attention; For science enthusiasts, professionals in the science field, or even students, these glasses can make for a thoughtful gift
- Easy to Clean: like regular drinking glasses, glass beaker flasks are easy to clean, should be cleaned manually and are inappropriate for microwave use, which may cause abrupt and severe temperature changes and make the flasks shattering; And these flasks aren't insulated and will become hot when filled with hot substances, so please use them carefully when holding hot drinks
9.3Excellent
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7
ADAMAS-BETAADAMAS-BETA 50ml Lab Flasks Double Neck Round Bottom Beakers Science Glassware Chemistry Flask,24/40 Center Joint,14/20 Side Joint
Main highlights- Multiple sizes: Capacity 5ml, 25ml, 50ml, 100ml, 250m, 500ml, 1000ml; single neck, double neck, triple neck; neck size 14/20, 19/22，24/40, 29/42. Various specifications of lab flasks are available for your choice.
- Multi-purpose: The glass flask is used to collect and measure liquids in the laboratory, and can also be used as a container in daily life.
- High-quality craftsmanship: The science flask's interface standard has high dimensional accuracy, the grinding mouth is manual fine grinding, the frosting is fine, the bottle wall is thickened, and the thickness is uniform to make the heating even.
- Exquisite appearance: The surface of the beaker is smooth and strong, with high transparency and clear markings.
- Borosilicate glass: Borosilicate chemistry flask has high-quality characteristics expansion rate, high temperature resistance, temperature difference resistance, high strength, high chemical stability, high light transmittance, etc. It is a frequently needed item in the laboratory.
9.2Excellent
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8
ADAMAS-BETAADAMAS-BETA 50ml Lab Flasks Double Neck Round Bottom Beakers Science Glassware Chemistry Flask,24/40 Center Joint,14/20 Side Joint
Main highlights- Multiple sizes: Capacity 5ml, 25ml, 50ml, 100ml, 250m, 500ml, 1000ml; single neck, double neck, triple neck; neck size 14/20, 19/22，24/40, 29/42. Various specifications of lab flasks are available for your choice.
- Multi-purpose: The glass flask is used to collect and measure liquids in the laboratory, and can also be used as a container in daily life.
- High-quality craftsmanship: The science flask's interface standard has high dimensional accuracy, the grinding mouth is manual fine grinding, the frosting is fine, the bottle wall is thickened, and the thickness is uniform to make the heating even.
- Exquisite appearance: The surface of the beaker is smooth and strong, with high transparency and clear markings.
- Borosilicate glass: Borosilicate chemistry flask has high-quality characteristics expansion rate, high temperature resistance, temperature difference resistance, high strength, high chemical stability, high light transmittance, etc. It is a frequently needed item in the laboratory.
9.1Excellent
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9
LABOYLaboy Glass 50mL Single Neck Round Bottom Boiling Flask Heavy Wall with 19/22 Joint Heating Reaction Receiving Flask Organic Chemistry Lab Glassware(Pack of 2)
Main highlights- WIDELY USED----The round bottom flask is widely used in organic chemistry,in a or vacuum apparatus ,it’s used a a flask and receiving flask with a glass condenser and some adapters like the 14 way 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 flask in rotary evaporators.
- STANDARD SIZE--- This round bottom flask designed with 19/22 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 50mL.Pack of 2pcs
- 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.
- HEAT-resistance DESIGN ---With spherical bottoms,this RBF is more resistance 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.
- BUY WITH CONFIDENCE----100% 45 DAY MONEY BACK GUARANTEE simply return for a full refund,no question asked
8.8Very Good
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10
Karter ScientificPlastic Erlenmeyer Flask Set - 5 Sizes - 50, 100, 250, 500, and 1000ml, Karter Scientific 230D9
Main highlights- Standard capacity: clear scale, easier to identify. Standard scale line, for accurate measurement.
- Solid base design, for more stable placement, reducing measurement error.
- Made of eco-friendly food-grade plastic, durable, non-toxic and odorless.
- Excellent product quality, with quality assurance. No bubbles, no burrs, smooth and rounded.
8.7Very Good
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