Labware Products & Reviews

The three necks are the same height. Each neck has a standard taper 24/40 joint.

These 12L PYREX® three neck flasks have two vertical side necks with 29/42 full length outer Standard Taper joints and a larger vertical center neck with a full length 55/50 Standard Taper joint.

These 1L PYREX® three neck flasks have two vertical side necks with 24/40 full length outer Standard Taper joints and a larger vertical center neck with a full length 34/45 Standard Taper joint.

These 250 mL PYREX® three neck flasks have two vertical side necks with 24/40 full length outer Standard Taper joints and a vertical center neck with a full length 24/40 Standard Taper joint.

These 2L PYREX® three neck flasks have two vertical side necks with 24/40 full length outer Standard Taper joints and a larger vertical center neck with a full length 45/50 Standard Taper joint.

These 500 mL PYREX® three neck flasks have two vertical side necks with 24/40 full length outer Standard Taper joints and a larger vertical center neck with a full length 34/45 Standard Taper joint.

These 5L PYREX® three neck flasks have two vertical side necks with 24/40 full length outer Standard Taper joints and a larger vertical center neck with a full length 45/50 Standard Taper joint.

These 100 mL PYREX® three neck flasks have two angled side necks at the same height with 19/38 Standard Taper outer joints and a larger center neck with a vertical 24/40 Standard Taper joint.

These 1L PYREX® three neck flasks have two angled side necks at the same height with 24/40 Standard Taper outer joints and a larger center neck with a larger vertical 34/45 Standard Taper joint.

These 250 mL PYREX® three neck flasks have two angled side necks at the same height with 24/40 Standard Taper outer joints and a center neck with a vertical 24/40 Standard Taper joint. This 250 mL flask is also a replacement part for organic chemistry kit No. 6949.

These 500 mL PYREX® three neck flasks have two angled side necks at the same height with 24/40 Standard Taper outer joints and a larger center neck with a vertical 34/45 Standard Taper joint.

These 1L PYREX® three neck flasks have two angled side necks at the same height with 24/40 Standard Taper outer joints and a center neck with a vertical 24/40 Standard Taper joint.

These 500 mL PYREX® three neck flasks have two angled side necks at the same height with 24/40 Standard Taper outer joints and a center neck with a vertical 24/40 Standard Taper joint.

These 250 mL PYREX® three neck flasks have two angled side necks at the same height with 19/22 Standard Taper outer joints and a center neck with a vertical 19/22 Standard Taper joint. This 250 mL flask is also a replacement part for organic chemistry kits Nos. 6949E and 6949G-2.

These 500 mL PYREX® three neck flasks have two angled side necks at the same height with 19/22 Standard Taper outer joints and a center neck with a vertical 19/22 Standard Taper joint.

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 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.

These PYREX replacement Polytetrafluorethylene (PTFE) valve bottom for No. 6305 Squibb separatory funnels.

These PYREX replacement Polytetrafluorethylene (PTFE) valve bottom for No. 6305 Squibb separatory funnels.

These 11.4L PYREX® rectangular chromatography tanks are ground to the close tolerances needed for tight cover fit. Jar edges are ground flat within 0.25mm. Covers are not supplied.Warning: Do not use with heat, pressure or vacuum applications.

These 3.8L PYREX® rectangular chromatography tanks are ground to the close tolerances needed for tight cover fit. Jar edges are ground flat within 0.25mm. Covers are not supplied.Warning: Do not use with heat, pressure or vacuum applications.

These 13.2L PYREX® general-purpose cylindrical chromatography tanks have tops ground to within 0.25mm tolerances to insure a tight cover fit. Covers are not supplied.Warning: Do not use with heat, pressure or vacuum applications.

These 36L PYREX® general-purpose cylindrical chromatography tanks have tops ground to within 0.25mm tolerances to insure a tight cover fit. Covers are not supplied.Warning: Do not use with heat, pressure or vacuum applications.

These 6.6L PYREX® general-purpose cylindrical chromatography tanks have tops ground to within 0.1mm tolerances to insure a tight cover fit. Covers are not supplied.Warning: Do not use with heat, pressure or vacuum applications.

This Corning® kit is similar to No. 6949E, as many of the same standard laboratory experiments can be performed with this kit. The kit’s PYREX® components all use 19/22 Standard Taper joints for standardization. Note in particular the inclusion of a 250 mL flask with side tubulation, which is useful when performing steam distillations or experiments requiring an air bleed. This kit contains a three neck boiling flask to enable…