Labware Products & Reviews

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…

These approximately 3mm PYREX® beads are useful as boiling stones, mixing beads and as packing for distillation columns. Beads are packaged in 0.45kg. (1 lb.) bottles (each bottle is one pack), which have a packing volume of approximately 360cm³ or 22 cubic inches.

These approximately 4mm PYREX® beads are useful as boiling stones, mixing beads and as packing for distillation columns. Beads are packaged in 0.45kg. (1 lb.) bottles (each bottle is one pack), which have a packing volume of approximately 360cm³ or 22 cubic inches.

These approximately 5mm PYREX® beads are useful as boiling stones, mixing beads and as packing for distillation columns. Beads are packaged in 0.45kg. (1 lb.) bottles (each bottle is one pack), which have a packing volume of approximately 360cm³ or 22 cubic inches.

These approximately 6mm PYREX® beads are useful as boiling stones, mixing beads and as packing for distillation columns. Beads are packaged in 0.45kg. (1 lb.) bottles (each bottle is one pack), which have a packing volume of approximately 360cm³ or 22 cubic inches.

These high performance Rotaflo® in-line stopcocks can be adjusted from a 0 to 10mm bore opening and have 13mm O. D. sidearms. They are designed so that only chemically resistant polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nut…

These high performance Rotaflo® in-line stopcocks can be adjusted from a 0 to 3mm bore opening and have 8mm O. D. sidearms. They are designed so that only chemically resistant polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nuts.…

These high performance Rotaflo® in-line stopcocks can be adjusted from a 0 to 6mm bore opening and have 10mm O. D. sidearms. They are designed so that only chemically resistant polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nuts…

These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 10mm bore opening and have 13mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or n…

These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 3mm bore opening and have 8mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nut…

These high performance Rotaflo® 90° angle stopcocks can be adjusted from a 0 to 6mm bore opening and have 10mm O. D. sidearms. They are designed so that only chemically resistant Polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nu…

These high performance Rotaflo® three-way stopcocks can be adjusted from a 0 to 3mm bore opening and have 8mm O. D. sidearms. They are designed so that only chemically resistant polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nut…

These high performance Rotaflo® three-way stopcocks can be adjusted from a 0 to 6mm bore opening and have 10mm O. D. sidearms. They are designed so that only chemically resistant polytetrafluoroethylene (PTFE) and PYREX® borosilicate glass are in contact with liquids and gases. The Rotaflo® stopcock design permits fine flow adjustment. Lubrication is not required and assembly is fast because there are no O-rings, washers or nu…

These hollow full length PYREX® 19/38 Standard Taper joint stoppers are closed at the bottom. They are interchangeable with standard taper joints of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate in or out. Grooves in the sides help prevent slippage. The flat to…

These hollow full length PYREX® 24/40 Standard Taper joint stoppers are closed at the bottom. They are interchangeable with standard taper joints of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate in or out. Grooves in the sides help prevent slippage. The flat to…

These hollow PYREX® 14/20 Standard Taper joint and bottle stoppers are closed at the bottom. They are interchangeable with standard taper joints and bottle stoppers of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate in or out. Grooves in the sides help prevent sl…

(This is the suggested replacement for 7620-19)These hollow PYREX® 19/22 Standard Taper joint and bottle stoppers are closed at the bottom. They are interchangeable with standard taper joints and bottle stoppers of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate…

(This is the suggested replacement for 7620-24)These hollow PYREX® 24/30 Standard Taper joint and bottle stoppers are closed at the bottom. They are interchangeable with standard taper joints and bottle stoppers of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate…

These hollow PYREX® 29/35 Standard Taper joint and bottle stoppers are closed at the bottom. They are interchangeable with standard taper joints and bottle stoppers of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate in or out. Grooves in the sides help prevent sl…

These blue and white No. 13 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These stoppers may be used in place of the conventional glass Standard Taper flask stoppers

These blue and white No. 16 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These stoppers may be used in place of the conventional Standard Taper flask stoppers.

These blue and white No. 19 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These stoppers may be used in place of the conventional glass Standard Taper flask stoppers.

These blue and white No. 22 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These stoppers may be used in place of the conventional glass Standard Taper flask stoppers.

These blue and white No. 27 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These stoppers may be used in place of the conventional glass Standard Taper flask stoppers.

These blue and white No. 32 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These stoppers may be used in place of the conventional glass Standard Taper flask stoppers.