Volumetric Flasks

Volumetric flasks are essential laboratory glassware designed to withstand high tolerances, ensure precise measurement and accurate volume control, and hold a specific fixed volume of liquid at a specific temperature. Sizes available include a 1 ml volumetric flask, a 100 ml volumetric flask, and a 1l volumetric flask. As sizes are measured precisely, they eliminate the need for repetitive volume measurements and increase accuracy. Volumetric flasks are manufactured to the highest quality and materials. Options include autoclavable and chemical-resistant plastics such as a polypropylene volumetric flask. Plastic flasks offer break-resistant properties to ensure safety and are easy to clean within the lab in case of an accident or spillage. Glass and Pyrex volumetric flasks are also an ideal solution to increase accuracy as they are transparent, colored, and coated for handling light-sensitive liquids.

Thomas Scientific also offers a variety of other lab flasks, including erlenmeyer flasks.

Volumetric Flasks

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  • KIMAX Brand Class A Volumetric Flasks

    DWK Life Sciences (Kimble)

    Calibrated "to contain " Standard Taper stoppers (4997K13 to K76) Size 2 mL is test-tube shape and not marked A (as tolerances are larger) Sizes 5 mL and larger are designed for Federal Specification NNN-F-289 and meet ASTM Standard E 288 Capacity/stopper size given in listings Supplied...

  • PYREX® EZ Access™ Wide Mouth Volumetric Flasks

    These PYREX® EZ Access™ wide mouth volumetric flasks are calibrated to Class A tolerances and are designed for microchemical work. The heavy duty, wide mouth facilitates filling and mixing. Supplied with interchangeable Standard Taper PYREX® ground glass stopper. The graduation line is...

  • Volumetric Flasks with Snap Cap - ASTM Class A

    Made of high quality borosilicate 3.3 glass Includes polyethylene snap cap Single graduation line for precise dilution and preparation Class A 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...

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

    Low actinic red stained glass provides protection to light sensitive solutions. Allowing less than 1% transmission below 400nm and 5% from 400-600nm. Wide mouth design facilitates mixing, pipette access, sampling and filling. Unique Flat Bottom Interior permits the use of a standard stir bar. Large...

  • Class A Amber Volumetric Flasks

    United Scientific Supplies

    Amber stained volumetric flasks are manufactured per ASTM E-288 Class A Serialized glassware specifications. Calibrated to contain (TC), these flasks feature white enamel printing and diamond etched graduation line. Our flasks feature heavy-duty and uniform wall thickness and a wide mouth design for...

  • PYREXPLUS® PVC-Coated Class A Volumetric Flasks

    Similar to 4997B13 series, but with protective PVC coating Coating promotes longer product life and greater safety and helps contain glass and contents should breakage occur Autoclavable and microwaveable to 121°C (250°F) Resistant to thermal shock With PYREX Standard Taper stopper

  • KIMAX Brand Class A, Serialized And Certified Volumetric Flasks

    Permanently marked with an individual serial number, providing an easy way to track items used during analytical testing Carefully selected to meet the Class A requirements as specified in ASTM E 288 - Standard Specification for Volumetric Flasks Supplied with a Certificate of Graduation Accuracy...

  • Flask Only 200 ml

    These PYREX® 200mL volumetric flasks provide improved lab convenience, broad selection and precise volume measurement. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for No. 13 Standard Taper glass stoppers....

  • PYREX Brand Class A Volumetric Flasks

    With barrel-shaped Standard Taper glass stopper Calibrated to contain at 20°C

  • Class A Volumetric Flasks

    Screw cap or stopper Meet Class A tolerances per DIN EN ISO 1042 PFA or PMP construction Highly transparent Easy to clean Flasks are manufactured from PFA (a perfluoxy copolymer), which is highly resistant to heat and chemical contamination. PFA surface properties offer superior cleanability to...

  • 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...

  • Class A, USP, Certified Glass Volumetric Flasks

    Class A, USP, certified volumetric flasks. These are supplied with a glass stopper with a dripping tip. Available in both transparent and amber color. High contrast blue enamel print on transparent flasks and white on amber flasks represent the optimum combination of resistance and readability....

  • Ground Glass Flask Stopper Clear

    The Sibata Glass Stopper is lightweight yet very strong to reduce chipping and breakage. It meets ASTM E-675 specifications.

  • Borosil® Amber Class A Volumetric Flasks

    Borosil® Amber Light Blocking Class A Volumetric Flasks are individually calibrated by automatic, laser-controlled calibration equipment. Supplied with standard taper glass stoppers. Flasks comply with ASTM E-288, Class A. 20mL option is not covered in ASTM. 5mL, 10mL, and 20mL options have a...

  • 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...

  • Volumetric Flasks with PE Stopper - Class A

    Volumetric Flask made of high quality, heavy duty, 3.3 borosilicate glass Class A tolerance complies with ISO 1042 standards Features a single graduation mark for precise dilution and preparation Ground glass socket fitted with a chemical resistant polyethylene stopper. > Volumetric Flask made of...

  • KimCote® Heavy-Duty Volumetric Flasks

    DWK Life Sciences (Kimble)

    Wide neck easily accommodates a 50 mL pipet Superior strength, durability and heavy uniform walls ensure safety in the lab Flat interior bottoms are ideal for stirring These KimCote® volumetric flasks are graduated to Class A volumetric tolerances and are designed from ASTM Specification E288....

  • Class A Volumetric Flasks with Snap Cap, Batch Certified, QR-Coded

    Durable, machine-blown body. Heavy beaded tubing neck. Flasks feature a sharp graduation line and large white block letters. A plastic snap cap is included. Meets Class A specifications per ASTM E-288. Batch Certified. Our volumetric flasks feature QR code integration to facilitate quick and easy...

  • PYREX® Class A Volumetric Flasks

    These PYREX® volumetric flasks provide improved lab convenience, broad selection and precise volume measurement. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for Standard Taper glass stoppers. Stoppers are...

  • Flask Complete 6000 ml

    These PYREX® 6L volumetric flasks provide improved lab convenience, broad selection and precise volume measurement. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for No. 38 Standard Taper pennyhead glass...

  • KIMAX Brand Class A Accuracy Volumetric Flasks

    KIMAX® flask calibrated to contain Class A accuracy but without a serial number Supplied with a polyethylene snap cap Replacement cap is 28150R Designed from ASTM Specification E288 requirements Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM...

  • 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...

  • PYREX® Brand Class A, Lifetime Red Volumetric Flasks

    Calibrated "to contain" Red stripe, through which capacity mark is etched for legibility and permanence Barrel-shaped Standard Taper glass stoppers

  • KIMAX Brand Volumetric Flasks With Stopper

    Calibrated "to contain", they are designed from ASTM Specification E288, Class B requirements Sizes 10 through 50 mL include Standard Taper 9 glass stopper; size 100 mL, Standard Taper 13; sizes 200 and 250 mL, Standard Taper 16, size 500 mL, Standard Taper 19; 1,000 mL, Standard Taper 22...

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What is a stopper in a flask?

A flask stopper is a closure used to seal the flask's opening, preventing the escape of contents and protecting them from contamination. Stoppers can be made from various materials, such as rubber, cork, or glass, depending on the flask type and the experiment's requirements.

Is there a 1 L volumetric flask?

Yes, a 1L (1000 mL) volumetric flask is a standard size commonly used in laboratories. It helps prepare and measure precise volumes of solutions. Like all volumetric flasks, it has a narrow neck with a single calibration mark to indicate the exact volume. The 1 L size is ideal for medium-scale solution preparation in analytical chemistry for making standard solutions and dilutions.

What is a stoppered conical flask used for?

A stoppered conical flask, commonly called an Erlenmeyer flask with a stopper, is used for mixing, storing, and transporting liquids while minimizing the risk of spillage or contamination. The stopper seals the flask, making it ideal for applications that require the contents to remain secure, such as preventing evaporation during storage or transport.

What is the largest volumetric flask?

The largest volumetric flasks commonly available are typically 5 liters (5000 mL) in capacity. These flasks help prepare large volumes of solutions with precise concentrations. Some manufacturers may produce custom or specialized volumetric flasks with capacities beyond 5 liters for industrial or large-scale laboratory applications, but these are less common.