Chemglass Lab Flasks
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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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Similar to CG-1512 recovery flasks, but plastic coated to prevent injury from broken glass and spillage of hazardous materials.
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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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Flat bottom borosilicate flask for use with Labconco and Virtis freeze dryers. Wide mouth design provides easy access sample. PLEASE NOTE: FLASKS ONLY. NOT SUPPLIED WITH RUBBER TOP, FILTER OR O-RING. Note: Labconco and Virtis are not related to or affiliated with Chemglass, and…
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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.…
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Heavy Wall blanks are 30% heavier than our standard CG-618 series. Blanks are used in the fabrication of single or multi-neck round bottom flasks. NOTE: NECK IS UNFINISHED, FLASK CANNOT BE USED WITHOUT MODIFICATION OF NECK.
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3 Baffles Vented Cap Shake Flasks
ChemglassFlask has 3 baffles on the lower outside edge of the flask to maximize oxygen transfer to the culture medium when used on an orbital shaker. The polypropylene vented caps have a 0.22µm (PTFE) hydrophobic membrane to allow sterile gas exchange while preventing contamination. Since these caps…
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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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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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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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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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Flasks, Dewar, Low Form, Foam
ChemglassFeatures: Increased SAFETY- Unbreakable Lightweight Design Each Dewar is Supplied with a Lid Patented Closed Cell Foam Construction (USPTO # 7,971,744) Lower Boil Off and Consumption of Liquid Nitrogen Patented foam dewars provide a safe and durable vessel for handling…
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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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Single Neck Flat Bottom Flasks
ChemglassSingle neck, flat bottom flask with a standard taper outer joint.
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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 single short neck flask with a standard taper outer joint. The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Please note: There are separate listings for different capacity single neck round bottom flasks.
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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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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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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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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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Flask has 4 bottom baffles and a constriction just below the neck to prevent splashing from reaching the closure.
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2800mL flask with 3 baffles on the lower outside edge of the flask to help oxygen transfer to the culture medium.
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2800mL flasks are designed for culturing organisms that require a large surface area to volume ratio. Available with 70mm screw neck with a solid or vented cap.
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Extra deep baffle indents on the lower outside edge of the flask to maximize oxygen transfer to the culture medium when used on an orbital shaker.
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Flasks, Erlenmeyer, Iodine
ChemglassFlask has a funnel top with a standard taper outer grind to accept a 24/40 long neck stopper allowing the handle to extend above the liquid seal. Used in ASTM D29 and ASTM D555. Available complete with stopper or flask only.
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Fernbach Without Baffles Flasks
ChemglassFlasks are designed for culturing organisms that require a large surface area to volume ratio. Available with a plain 59mm ID neck, 38mm OD Delong style neck or GL-45 screw neck supplied with a vented cap.
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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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Flasks, Erlenmeyer, Screw Caps
ChemglassErlenmeyer flask with screw thread finish. Supplied complete with white rubber lined black phenolic cap. Long skirted caps can be loosened without falling off while shaking flask.
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Similar to CG-1603, but with PTFE stopper.
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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 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.