General Lab Products & Reviews

These heavy duty 500 mL PYREX® round bottles are manufactured from low actinic glass for use when storing or transporting light sensitive materials. They include a linerless, one-piece autoclavable orange polypropylene plug seal GL45 threaded cap with a drip-free pouring ring. New glass bead indicates full capacity line. Bottles have permanent white enamel graduations and marking spots.A wide range of optional caps are availab…

These heavy duty 5L PYREX® round bottles are manufactured from low actinic glass for use when storing or transporting light sensitive materials. They include a linerless, one-piece autoclavable orange polypropylene plug seal GL45 threaded cap with a drip-free pouring ring. Bottles have permanent white enamel graduations and marking spots.Caution: Bottles larger than 2L should NOT be used with bottle top filter units, or in oth…

This simple 650mm long PYREX® air condenser has an inner 24/40 Standard Taper joint with a drip tip. It is made from low actinic glass to protect light sensitive materials and is useful for condensing materials with boiling points above 150°C.

These 1L PYREX® flasks, without tubulations, are blown in special molds in shapes designed to give maximum mechanical strength Marked to avoid confusion with similar sizes of Erlenmeyer flasks Graduated to show their approximate capacity Permanent white enamel graduations and marking spots Beaded rim uses a No. 8 rubber stopper

These 2L PYREX® flasks, without tubulations, are blown in special molds in shapes designed to give maximum mechanical strength Marked to avoid confusion with similar sizes of Erlenmeyer flasks Graduated to show their approximate capacity Permanent white enamel graduations and marking spots Beaded rim uses a No. 9 rubber stopper

These 4L PYREX® flasks, without tubulations, are blown in special molds in shapes designed to give maximum mechanical strength Marked to avoid confusion with similar sizes of Erlenmeyer flasks Graduated to show their approximate capacity Permanent white enamel graduations and marking spots Beaded rim uses a No. 12 rubber stopper

These PYREX® 2L flasks have sidearm tubulations and are blown in special molds designed to give maximum mechanical strength. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers. Tubulation O.D. is 12.5mm.

(This is the suggested replacement for 5342-1L)These 1L PYREX® heavy wall flasks have seated a bent, removable plastic tubulation in a grommet. Should the flask be upset, the grommet acts as a shock absorber. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers and uses a No. 8 rubber stopper. Tubulation O.D. is 12.5mm."

(This is the suggested replacement for 5342-250)These 250 mL PYREX® heavy wall flasks have seated a bent, removable plastic tubulation in a grommet. Should the flask be upset, the grommet acts as a shock absorber. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers and uses a No. 6 rubber stopper. Tubulation O.D. is 12.5mm"

(This is the suggested replacement for 5342-2L)These 2L PYREX® heavy wall flasks have seated a bent, removable plastic tubulation in a grommet. Should the flask be upset, the grommet acts as a shock absorber. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers and uses a No. 9 rubber stopper. Tubulation O.D. is 12.5mm."

(This is the suggested replacement for 5342-4LThese 4L PYREX® heavy wall flasks have seated a bent, removable plastic tubulation in a grommet. Should the flask be upset, the grommet acts as a shock absorber. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers and uses a No. 12 rubber stopper. Tubulation O.D. is 12.5mm."

(This is the suggested replacement for 5342-500)These 500 mL PYREX® heavy wall flasks have seated a bent, removable plastic tubulation in a grommet. Should the flask be upset, the grommet acts as a shock absorber. For convenience, the flasks are graduated to show approximate capacity. The neck finish affords an excellent fit for rubber stoppers and uses a No. 7 rubber stopper. Tubulation O.D. is 12.5mm."

Brand: PYREX®

These PYREX® 125 mL micro filtering flasks are recommended for microchemical use. The vacuum hose is attached to the flask's sidearm. A funnel is inserted into the neck of the flask through a ground joint or rubber stopper. The applied vacuum facilitates the filtration process. These flasks have permanent white enamel marking spots.

These PYREX® 50 mL micro filtering flasks are recommended for microchemical use. The vacuum hose is attached to the flask's sidearm. A funnel is inserted into the neck of the flask through a ground joint or rubber stopper. The applied vacuum facilitates the filtration process. These flasks have permanent white enamel marking spots.

These 125 mL PYREX® iodine determination flasks are blown in specially designed molds, thereby insuring uniformity and proper contour. The No. 22 Standard Taper stopper projects above the liquid seal trough to facilitate removal. For replacement stoppers, see No. 7640N. Reference: ASTM D-29 and D-555.

These 250 mL PYREX® iodine determination flasks are blown in specially designed molds, thereby insuring uniformity and proper contour. The No. 22 Standard Taper stopper projects above the liquid seal trough to facilitate removal. For replacement stoppers, see No.7650-22. Reference: ASTM D-29 and D-555.

These 500 mL PYREX® iodine determination flasks are blown in specially designed molds, thereby insuring uniformity and proper contour. The No. 22 Standard Taper stopper projects above the liquid seal trough to facilitate removal. For replacement stoppers, see No. 7640N. Reference: ASTM D-29 and D-555.

Brand: PYREX®

These 100 mL PYREX® Kjeldahl flasks have tooled finished necks for extra strength and uniform rubber stopper (No. 2) fit. Wall thickness is controlled to offer the optimum balance between thermal shock and chemical resistance. They can be used in ASTM E-258 procedures. Care must be taken to ensure the bottoms of the flasks do not come in contact with the heating elements. Most Kjeldahl equipment manufacturers have ring support…

These 300 mL PYREX® Kjeldahl flasks have tooled finished necks for extra strength and uniform rubber stopper (No. 5) fit. Wall thickness is controlled to offer the optimum balance between thermal shock and chemical resistance. They can be used in ASTM E-258 procedures. Care must be taken to ensure the bottoms of the flasks do not come in contact with the heating elements. Most Kjeldahl equipment manufacturers have ring support…

These 800 mL PYREX® Kjeldahl flasks have tooled finished necks for extra strength and uniform rubber stopper (No. 7) fit. Wall thickness is controlled to offer the optimum balance between thermal shock and chemical resistance. They can be used in ASTM E-258 procedures. Care must be taken to ensure the bottoms of the flasks do not come in contact with the heating elements. Most Kjeldahl equipment manufacturers have ring support…

These small 30 mL PYREX(r) Kjeldahl flasks, without tooled neck, is suitable for multiple microdigestions. They take a No. 0 rubber stopper. Care must be taken to ensure the bottoms of the flasks do not come in contact with the heating elements. Most Kjeldahl equipment manufacturers have ring supports for this purpose. -Reference: ASTM E-147.

Brand: PYREX® Flask Style: Erlenmeyer Capacity: 250 mL Neck Style: Narrow mouth

These 100 mL PYREX® EZ Access™ wide mouth volumetric flasks are calibrated to Class A tolerances and are designed for microchemical work. Low actinic stained glass provides 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 heavy duty, wide mouth facilitates filling and mixing. Supplied with an…