Round Bottom Flask Pyrex

Short neck Heavy wall PYREX round bottom boiling flasks have full-length outer Standard Taper joints, but with shorter necks. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and…

Round bottom Short ring neck These PYREX® round bottom boiling flasks have short ring necks. These ring neck boiling flasks are precisely tooled for uniform stopper fit. The reinforced rim increases mechanical strength. These flasks are used in applications requiring rigid stoppering…

These 22L PYREX(r) round bottom boiling flasks have short ring necks and take a No. 14 rubber stopper. These ring neck boiling flasks are precisely tooled for uniform stopper fit. The reinforced rim increases mechanical strength. These flasks are used in applications requiring rigid stoppering and…

PYREX round bottom boiling flasks have full length outer Standard Taper joints, but with shorter necks. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are controlled to provide balance between thermal expansion and mechanical strength for greater shock resistance. The round…

These PYREX(r) round bottom boiling flasks have full length outer Standard Taper joints, but with shorter necks. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for…

These 1L PYREX® round bottom boiling flasks have long necks with tooled mouths and take a No. 8 rubber stopper. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for…

These 100mL PYREX(r) round bottom boiling flasks have long necks with tooled mouths and take a rubber stopper. They are manufactured from No. 7740 borosilicate glass. Wall thicknesses are carefully controlled to provide the proper balance between thermal expansion and mechanical strength for greater…

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.

…This system comes complete with PYREX® Allihn condenser with a 45/50 Standard Taper inner joint and 500mL PYREX® round bottom boiling flask with 24/40 Standard Taper outer joint. For a replacement extractor only, see No. 3920-MBO; for a replacement 500mL flask, see No. 4320-500; for a replacement…

… 25mL Round Bottom Boiling Flask (4321A-25) 50mL Round Bottom Boiling Flask (4321A-50) 100mL Round Bottom Boiling Flask (4321A-100) 250mL Round Bottom Boiling Flask (4321A-250) 500mL Round Bottom Flask (4321A-500 ) 125mL Pear-Shaped Separatory Funnel (6412A-125) PYREX® Stopper,…

… 25mL Round Bottom Boiling Flask (4320B-25) 50mL Round Bottom Boiling Flask (4320B-50) 100mL Round Bottom Boiling Flask (4320B-100) 250mL Round Bottom Boiling Flask (4320B-250) 500mL Round Bottom Boiling Flask (4320B-500) 125mL Pear-Shaped Separatory Funnel (6413-125) PYREX®…

These PYREX® traps are used in rotary evaporators. They have a round body with upper and lower stems. The lower stem has a Standard Taper inner joint at the bottom and extends upward inside the body. The closed top of this stem has two side openings. The upper stem has a Standard Taper outer joint.