General Lab Products & Reviews

These 2L Class A PYREX® Lifetime Red volumetric flasks have the capacity mark etched as a fine line through a narrow red band into clear glass, making a filler unnecessary and giving high legibility, accuracy and permanence. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for No. 2000 polyethylene snap-caps. For replacement snap-caps see No.…

These 50 mL Class A PYREX® Lifetime Red volumetric flasks have the capacity mark etched as a fine line through a narrow red band into clear glass, making a filler unnecessary and giving high legibility, accuracy and permanence. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for No. 50 polyethylene snap-caps. For replacement snap-caps see No…

These 500 mL Class A PYREX® Lifetime Red volumetric flasks have the capacity mark etched as a fine line through a narrow red band into clear glass, making a filler unnecessary and giving high legibility, accuracy and permanence. The strength of these flasks has been increased appreciably through machine-blown bodies to which are sealed heavy-tubing necks tooled for No. 500 polyethylene snap-caps. For replacement snap-caps see…

These 1 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances. They are designed for microchemical work in accordance with the recommendations of the Committee of Microchemical Apparatus, Analytical Division of the A.C.S. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. Uses a No. 8 Standard Taper PYREX® stopper. For replacement stoppers, see No.…

These 10 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances. They are designed for microchemical work. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. Uses a No. 9 Standard Taper PYREX® stopper. For replacement stoppers, see No. 7650. The graduation line is sharp and permanent. The white markings are easy to read. Reference: ASTM E-237.

These 2 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances. They are designed for microchemical work in accordance with the recommendations of the Committee of Microchemical Apparatus, Analytical Division of the A.C.S. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. Uses a No. 8 Standard Taper PYREX® stopper. For replacement stoppers, see No.…

These 25 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances. They are designed for microchemical work. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. Uses a No. 9 Standard Taper PYREX® stopper. For replacement stoppers, see No. 7650. The graduation line is sharp and permanent. The white markings are easy to read. Reference: ASTM E-237.

These 5 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances. They are designed for microchemical work in accordance with the recommendations of the Committee of Microchemical Apparatus, Analytical Division of the A.C.S. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. Uses a No. 8 Standard Taper PYREX® stopper. For replacement stoppers, see No.…

These 1 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances and individually serialized and supplied with a Certificate of Identification and Capacity. They are designed for microchemical work in accordance with the recommendations of the Committee of Microchemical Apparatus, Analytical Division of the A.C.S. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, ha…

These 10 mL PYREX® microvolumetric flasks are calibrated to Class A tolerances and individually serialized and supplied with a Certificate of Identification and Capacity. They are designed for microchemical work. To improve the stability of this small flask, a hexagonal base, similar to those on all cylinders, has been added. Uses a No. 9 Standard Taper PYREX® stopper. For replacement stoppers, see No. 7650. The graduation lin…