Chemglass Lab Flasks
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Heavy wall, wide mouth flask with a GL80 glass thread and a 24/40 connecting adapter. Flasks have a heavy wall for vacuum applications and are balanced to prevent run-out during rotation. Unique design makes it easier to handle highly viscous liquids, powders, and solids. The large opening permits…
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Flasks are manufactured to conform to Federal Specifications NNN-F-289 for Type 1, Class" A" unserialized flasks and ASTM E-288. Supplied complete with one closed bottom polyethylene stopper. For additional stoppers, see CG-8740. NOTE: THE CG-1602-20 CONFORMS TO ISO 1042, DIN 12664…
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Manufactured from borosilicate glass these wine testing volumetric flasks have wide bases and a flat bottoms for stability. Flask neck is graduated in 1mL subdivisions from 680 to 780mL. The long neck is calibrated To Contain at 20°C and markings indicate the volume of liquid when filled to…
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Flasks, Erlenmeyer, Stopper Tops
ChemglassErlenmeyer flask with standard taper stopper top. Available with or without stopper. For stoppers only see CG-3018.
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Unbreakable Dewar flask is made entirely of Stainless Steel. Dewar flask has many flexible laboratory applications including cooling of small samples and as an insulating flask. Furthermore, it can be used for storage & transport of liquid nitrogen LN2, dry ice CO2, and…
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Baffle indents on the lower outside edge of the flask to help oxygen transfer to the culture medium when used on an orbital shaker.
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Kjeldahl shape facilitates heating and stirring while permitting easy transfer of liquids or solids. Lower portion of flask fits standard heating mantles. Available with a choice of a 2mm high vacuum glass stopcock having a S.S. constant pressure retaining device or a 0-4mm Chem-Cap®…
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Round bottom, HEAVY WALL, three-neck flask with standard taper outer joints on the center neck and vertical side necks. Lower half of the flask is jacketed with two hose connections for circulation of heating or cooling liquid. Lower outlet is a CG-424-05, 4mm PTFE straight bore stopcock.
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Round bottom, HEAVY WALL, four neck flask with standard taper outer joints on the center and 20º angled side necks.
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Non-baffled flasks are ideal for growing, mixing and storing both aerobic and anaerobic cultures. Graduated to approximate volumes. Delong style neck is made to fit stainless steel or plastic closures, while reducing the amount of splashing that would reach the closure.
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Erlenmeyer Polycarbonate Sterile Flasks
ChemglassErlenmeyer flasks are sterile, non-pyrogenic and manufactured with polycarbonate resin. Flasks are supplied with exclusive DuoCap® designed for both aerobic and anaerobic applications. For aerobic applications the cap utilizes a 0.22µm pore size PTFE membrane for sterile air exchange.…
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Replacement vessel is supplied with black phenolic, rubber lined caps for the 18mm side arms, polypropylene caps and pouring rings for the GL-32 and GL-45 side arms.
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Glassblowers Flask Blanks, Recovery
ChemglassBlanks for fabrication of recovery flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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Flasks, Filtering, Heavy Wall
ChemglassHEAVY WALL Erlenmeyer shaped filtering flask with standard taper outer joint and serrated hose connection for attachment to vacuum source. For stoppers see CG-3000.
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Unbreakable Dewar flask is made entirely of Stainless Steel. Dewar flask has many flexible laboratory applications including cooling of small samples and as an insulating flask. Furthermore, it can be used for storage and transport of liquid nitrogen LN2, dry ice CO2, and…
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Glassblowers Flask Blanks, Flat Bottom
ChemglassBlanks for fabrication of single or multi-neck flat bottom flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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Round bottom storage flask with a standard taper outer joint on the sidearm. The 50, 100 and 250mL sizes have a 0-4mm Chem-Vac™ Chem-Cap® valve while the 500 and 1000mL sizes have a 0-8mm valve size.
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Flasks, Quartz, Flat Bottom, Single Neck
ChemglassSingle neck, flat bottom, quartz flask with standard taper outer joint.
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Glassblowers Flask Blanks, Round Bottom
ChemglassBlanks for fabrication of single or multi-neck round bottom flasks. NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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Shake Flasks, 6 Baffles, Delong Neck
ChemglassFlask has 6 baffles, 3 baffles on the lower outside edge of the flask and 3 baffles on the bottom surface of the flask to maximize oxygen transfer to the culture medium when used on an orbital shaker. Delong style neck is made to fit stainless steel or plastic closures, while the longer neck…
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Round bottom, HEAVY WALL, three neck flask with standard taper outer joints on the center and side necks. Lower outlet is a CG-424-05, 4mm straight bore PTFE stopcock.
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Similar to CG-1600 but with the addition of a mixing bulb between the calibration line and the stopper. The mixing bulb contains approximately one tenth of the flask capacity and aids in the mixing or dissolving of the flask contents. Supplied complete with one solid glass pennyhead stopper. For…
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Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center neck and vertical side necks. Flasks with 29/26 center necks have a groove tooled just below the grind to aid in clamping of the flask.
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Baffle indents on the lower outside edge of the flask to help oxygen transfer to the culture medium when used on an orbital shaker. Delong style neck is made to fit stainless steel or plastic closures, while the longer neck reduces the amount of splashing that would reach the closure.
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Kuderna-Danish Flasks
ChemglassLower body of flask has a hemispherical shape to afford continuous flow of heavier fractions to concentrator tube during reflux. Top joint is a 24/40 outer while the lower joint is a 19/22 inner. Available with and without hooks on the lower 19/22 inner joint.
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Flasks, Heavy Wall, Pear-Shaped, 2-Necks
ChemglassPear shape, HEAVY WALL 2-neck flask with standard taper outer joints. Flasks with a 10/18 outer joint on the side neck are used with either jointed thermometers or CG-1079 inlet adapters.
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Quadruple baffled Erlenmeyer flasks are sterile, non-pyrogenic and manufactured with polycarbonate resin. Flasks are supplied with either exclusive DuoCap® designed for both aerobic and anaerobic applications (for aerobic applications the cap utilizes a 0.22µm pore size PTFE membrane for…
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Round bottom single neck flask having a standard taper outer joint. Available with a choice of a 2mm high vacuum glass stopcock having a S.S. constant pressure retaining device or a 0-4mm Chem-Cap® Airfree® inlet valve.
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Flask has 6 baffles, 3 baffles on the lower outside edge of the flask and 3 baffles on the bottom surface of the flask to maximize oxygen transfer to the culture medium when used on an orbital shaker. Gray polypropylene vented cap has a 0.22µm (PTFE) hydrophobic membrane to allow gas exchange…
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Round bottom, HEAVY WALL, five-neck flask with standard taper outer joints on the center neck and vertical side necks.
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Round bottom, HEAVY WALL single short neck flask for use on rotary evaporators for receiving distillate. Joint at the top of the flask is a 35/25 socket. Plastic Coated to prevent injury from broken glass while preventing spillage of hazardous materials.
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Water jacketed, flat bottomed spinner flasks consist of a water jacketed spinner flask, manufactured from Type 1 Class A borosilicate glass, and a microcarrier style impeller with glass shaft that extends through the cap and PTFE paddle. Flasks are typically used with a circulating water bath.…