Labware Products & Reviews

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.

These blue and white No. 38 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 conventional glass Standard Taper flask stoppers.

These blue and white No. 8 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. 9 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.