Volumetric Flask Glass Stopper

…borosilicate glass, wide mouth flasks are designed to provide pipette access along with facilitating filling and sampling. Unique flat bottom interior permits use of a standard stir bar. The heavy wall thickness gives greater durability. Supplied complete with glass Standard Taper pennyhead stopper.

These flasks are RAY-SORB™ processed to protect your light-sensitive contents from short-length lightwaves. Calibrated to contain With a marking spot Supplied with a PTFE Standard Taper stopper having a color-coded handle Replacement stopper is 41901R Designed from ASTM…

Calibrated to Class A ASTM E-542 and E-288 Supplied with a certificate of identification Traceable to NIST standards The graduation line is sharp and permanent. Large white block letters make it easy to read. Supplied with a Standard Taper stopper.

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.…

…Polypropylene (PP) volumetric flasks provide a break-resistant alternative to glass. Flasks meet Class B per DIN EN ISO 1042. Flasks are supplied with matching PP screw cap or stopper. The 10 mL size allows for accurate measurement of small volumes. Screw cap or stopper Meet Class B…

…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. Batch Certified. Our volumetric flasks feature QR code integration to facilitate quick and…

KIMAX flask with a graduation ring blasted on the neck. Calibrated to contain. With a marking spot ground glass stopper is supplied. Mixing bulb in the neck, between the stopper and capacity ring, contains Approximately one tenth of the capacity of the body to aid in dissolving or mixing the…

Solid pennyhead stopper for volumetric flasks, centrifuge tubes, etc. Meets ASTM Standard E 694.

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.

Polymethylpentene (PMP) and polypropylene (PP) volumetric flasks are an excellent break-resistant alternative to glass. Class A per DIN EN ISO 1042. Supplied with matching PP standard taper joint stoppers.

RAY-SORB Processed Glass with PE 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…

These borosilicate glass volumetric flasks are provided with a plastic closed-bottom stopper which fits the Standard Taper ground zone. Stopper design prevents the neck from breaking if flask is tipped over. Calibrated "to contain" (TC) at 20°C.

…PTFE stoppers (4997L15 to L65) Flasks have marking spots on all sizes 10 mL and larger. The 2 mL size is test tube shaped; all other sizes are conventional flask shape. The 5 mL and larger sizes are designed from requirements for Type 1, Class A “unserialized” flasks of Federal…

…the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. The graduation line is sharp and permanent and the white markings are easy to read.  Flasks with capacities of 1, 2 and 5 mL come with a No. 8 PYREX stopper while 10 and 25 mL capacity…

…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 stoppers. …

Amberized and calibrated "to contain" at 20°C, these borosilicate glass flasks are designed to meet specifications of ASTM E 288 Class A "Unserialized flasks." Stoppered flasks are supplied with glass penny head Standard Taper stoppers.

…borosilicate glass, wide mouth flasks are designed to provide pipette access along with facilitating filling and sampling. Unique flat bottom interior permits use of a standard stir bar. The heavy wall thickness gives greater durability. Supplied complete with glass Standard Taper pennyhead stopper.

Manufactured from Type 1, Class A borosilicate glass Calibrated “to contain”, unserialized flasks come with permanently etched graduation line and write on patch Volumetric flasks meet Federal Specifications NNN-F-289 and ASTM E288 Volumetric flasks include ground-glass stoppers

…interior bottoms for stirring with standard stir bars Graduated to Class A volumetric tolerances for wide-mouth flasks Glass Standard Taper stoppers Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements and…

These volumetric flasks are highly-transparent, easy-to-clean, and meet Class A tolerances per DIN EN ISO 1042. Flasks are manufactured from PFA (a perfluoxy copolymer), which is highly resistant to heat and chemical contamination. PFA surface properties offer superior cleanability to glass,…

Calibrated "to contain" at 20°C Accuracy tolerances approximately twice those specified for Class A

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. …

These Class A PYREX volumetric flasks are made from red low actinic stained glass to provide protection for materials sensitive to light. The protective color is an integral part of the flask, which retains its mechanical strength, chemical stability and thermal resistance. The graduation line is…

…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 facilitate…

An excellent alternative to glass flasks, these glass flasks are made from PMP are gravimetrically calibrated to contain at 20º C. These plastic volumetric flasks meet Class B tolerances per DIN EN ISO 1042.

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 …

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.

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…

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. Batch certified.

Calibrated to contain. Flasks feature a mixing bulb in the neck, between the stopper and capacity ring, that contains approximately one-tenth of the capacity of the body to aid in dissolving or mixing the contents. With marking spot, [ST] ground glass stopper, and graduation ring blasted on the…

…tooled for No. 13 Standard Taper glass stoppers. For replacement stoppers see No. 7650. These Class A volumetric flasks have been manufactured to Class A tolerances as established by ASTM E- 694 for volumetric ware, ASTM E-542 for calibration of volumetric ware and ASTM E-288 for volumetric flasks.