Lab Flasks

Lab flasks are essential tools in the laboratory environment, offering versatility and precision in various scientific applications. This category, including a range of flask types, is integral to experiments across chemistry, biology, and pharmaceutical fields.

volumetric flasks, prized for their accuracy in measuring liquid volumes, are a highlight of this category, crucial for quantitative analyses. boiling flasks, with their round bodies and narrow necks, facilitate even heating and are essential in distillation and boiling processes. Neck filtration flasks are designed for vacuum filtration, combining durability with functionality for precise separation tasks.

The round, bottom-angled three-neck flasks stand out for their adaptability in complex chemical reactions, allowing simultaneous inputs or outputs. Also, baffled flasks enhance the mixing and oxygen transfer in biological cultures with their unique design.

Each type of lab flask, from glass flasks with stoppers to volumetric flasks, plays a pivotal role in lab efficiency and accuracy. This extensive range of lab flasks enhances experimental capabilities and encourages exploration and innovation in laboratory settings.

Lab Flasks

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  • Flask, Volumetric,  Wide Mouth, Globe Glass

    Globe Glass volumetric flasks are calibrated to meet ASTM tolerance specifications for precise measurement in solution preparation and dilution.  A diamond etched graduation line indicates the calibrated capacity of each measuring flask.  Wide mouth options are available for easier filling...

  • KIMAX® Heavy-Duty Wide Mouth Class A Volumetric Flasks with Glass Stoppers, Calibrated, Serialized & Certified

    KIMAX flask is permanently marked with an individual serial number and is supplied with a Certificate of Graduation Accuracy. Graduation ring is blasted on the neck. Calibrated "to contain", flasks are supplied with a marking spot and a standard taper glass stopper. Designed from ASTM...

  • Flasks, Volumetric, Class A, Wide Mouths, Heavy Duty, Heavy Wall, Large Numbers, Flat Bottoms, PTFE Stoppers

    Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large permanent white letters make the capacity clearly visible. Flasks are calibrated "To Contain" at Class A tolerances, per ASTM E288...

  • Flasks, Volumetric, Class A, Wide Mouths, Heavy Duty, Heavy Wall, Large Numbers, Flat Bottoms, Polyethylene Stoppers

    Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large permanent white letters make the capacity clearly visible. Flasks are calibrated "To Contain" at Class A tolerances, per ASTM E288...

  • Flasks, Volumetric, Class A, Wide Mouths, Heavy Duty, Heavy Wall, Large Numbers, Flat Bottoms, Glass Stoppers

    Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large permanent white letters make the capacity clearly visible. Flasks are calibrated "To Contain" at Class A tolerances, per ASTM E288...

  • Flask, Volumetric , Globe Glass

    Globe Glass volumetric flasks are calibrated to meet ASTM tolerance specifications for precise measurement in solution preparation and dilution.  A diamond etched graduation line indicates the calibrated capacity of each measuring flask.  Wide mouth options are available for easier filling...

  • KIMAX® Heavy-Duty Wide Mouth Class A Volumetric Flasks with Glass Stoppers

    Clear glass with glass stoppers Pipet access is easy with wide mouth, volumetric flasks Superior strength, durability and safety from heavy, uniform walls Quick identification with large, permanent, easy-to-read markings Flat interior bottoms for stirring with standard stir bars Accuracy - graduated...

  • KIMAX® Heavy-Duty Wide-Mouth Class A Volumetric Flasks with No Stoppers

    Clear Glass With No Stopper Pipet access is easy with wide-mouth, volumetric flasks Superior strength, durability and safety from heavy, uniform walls Quick identification with large, permanent, easy-to-read markings Flat interior bottoms for stirring with standard stir bars Accuracy - graduated to...

  • Class A Mixing Bulb Style Wide Mouth Flasks with Standard Taper Stoppers

    Wide mouths allow easy access into these mixing bulb volumetric flasks for applications such as dissolving tablets and other solids. Mixing bulb in neck accommodates approximately one tenth of the flask’s total volume and is designed to aid in dissolving or mixing the contents of the flask...

  • Nunc™ 300cm2 Cell Culture Treated Flasks

    Durable and easy to use: Blow-molded One-piece design with straight neck and molded grip notches Bold printed graduations from 100 to 500mL in 50mL graduations Large writing patch Prominent stacking feet on upper surface for reliable stacking in incubators and under culture hood High-quality...

  • Glass Kjedahl Flasks

    Designed for nitrogen determination as per Kjeldahl method Made of high quality Borosilicate glass Long neck, round bottom Conforms to DIN ISO 12360 standard Kjeldahl Flask has a long neck, round bottom, and is made from industrial quality borosilicate 3.3 glass. Designed for nitrogen determination...

  • Volumetric Flasks with Snap Cap - ASTM Class B

    Made of high quality borosilicate 3.3 glass Includes polyethylene snap cap Single graduation line for precise dilution and preparation Class B as per ASTM-E288 Volumeteric flaks made of durable borosilicate 3.3 glass with a single graduation mark. Fitted with a chemically-resistant polyethylene snap...

  • Erlenmeyer and Fernbach Flasks

    Designed for mammalian suspension culture applications as well as bacterial & yeast culture Available with either solid or vent cap to eliminate the chance of unintended venting, unlike combination caps Vent caps feature 0.22µm hydrophobic membrane which allows for gas exchange without...

  • Wide Neck Glass Erlenmeyer Flasks

    Made of high quality borosilicate 3.3 glass Wide neck for easy filling Conforms with DIN ISO 24450 standards for flasks Wide neck conical flask with white graduations. Made of high quality borosilicate 3.3 glass. Autoclavable, with superior chemical durability. Low temperature gradient- can...

  • Class A Volumetric Flasks with Glass Stopper

    Durable, machine-blown body. Heavy beaded tubing neck. Flasks feature a sharp graduation line and large white block letters. A ground glass stopper is included. Meets Class A specifications per ASTM E-288. Individually serialized and certified. Our volumetric flasks feature QR code integration to...

  • PYREX® Kjeldahl Flasks

    Round bottom and long neck 30 mL size has square-cut mouth for multiple micro digestions; mouths of larger sizes are tooled for uniform rubber stopper fit. 30 mL flask conforms with ASTM Standard E 147 for microchemical apparatus; 100 mL through 800 mL flasks can be used in ASTM E 258 procedure.

  • Volumetric Flasks, Class A

    DWK Life Sciences (Kimble)

    KIMAX flask used in assay of oils of cinnamon, chenopodium, cloves, spearmint and other essential oils, according to methods of the United States Pharmacopoeia and the Essential Oil Association of the USA. Calibrated to contain. With a marking spot and a durable white ceramic enamel scale. Neck is...

  • SYNTHWARE Round Bottom Flasks

    SYNTHWARE round bottom boiling flasks with full length standard taper outer joint. All sizes are heavy wall design and are hand blown from borosilicate tubing to ensure uniform wall thickness.

  • Erlenmeyer Flask, Vent Cap, Baffled Bottom, PC, Sterile

    Lightweight plastic material is easier and safer to handle than glass Designed for mammalian suspension culture applications as well as bacterial & yeast culture Baffled flasks enhance both vertical and circular culture movement to improve aeration Vent cap options are available to prevent the...

  • Class A Volumetric Flasks

    SP Wilmad-LabGlass

    These borosilicate glass volumetric flask sizes comply with requirements for Type 1, Class A "Unserialized flasks". They are supplied with a standard taper penny head glass stopper. Calibrated "to contain" at 20°C. Reference: ASTM E288 and Federal Specifications NNN-F-289....

  • PYREX® VISTA™ Class A Volumetric Flasks with PYREX® Glass Standard Taper Stopper

    PYREX® VISTA volumetric flasks provide precise volume measurement. The necks are tooled for Standard Taper glass stoppers. The graduation line is sharp and permanent and large blue block letters make the inscription easy to read. The 1 mL and 2 mL sizes are test tube shaped.  These Class A...

  • Volumetric Flasks with Glass Stopper - ASTM Class A

    Borosilicate glass volumetric flask, fitted with solid glass stopper, in compliance with ASTM-E288 standard. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C. Calibrated to contain. Eisco Labs proudly...

  • Glass Volumetric Flasks Class A with Glass Stopper

    Glass Class A Volumetric Flasks feature a pennyhead stopper and are Batch Certified. Durable, machine-blown body. Heavy beaded tubing neck. Flasks feature a sharp graduation line and large white block letters. A ground glass stopper is included. Meets Class A specifications per ASTM E288.

  • Volumetric Flask, Class A, with Glass Stopper, Individually Certified

    Durable, machine-blown body. Heavy beaded tubing neck. Flasks feature a sharp graduation line and large white block letters. A ground glass stopper is included. Meets Class A specifications per ASTM E-288. Individually serialized and certified.

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What are three-neck flasks used for?

Three-neck flasks are versatile pieces of laboratory glassware for conducting chemical reactions that require multiple access points. The central neck is typically used for mounting a reflux condenser or stirring apparatus, while the two side necks provide ports for adding reagents, inserting thermometers, or connecting additional equipment like gas inlets or distillation setups.