Stopper 27

…the stopper is held in place by hand. On Glas-Col shakers, glassware holders automatically restrain the stopper. The non sticking, ground glass valve is backed with a stainless steel spring and a PTFE closure screw for maximum chemical resistance Fits standard Taper Stopper size: 27

…are designed from ASTM Specification E288, Class B requirements Sizes 10 through 50 mL include Standard Taper 9 glass stopper; size 100 mL, Standard Taper 13; sizes 200 and 250 mL, Standard Taper 16, size 500 mL, Standard Taper 19; 1,000 mL, Standard Taper 22 and size 2,000 mL, Standard Taper 27

…flasks have machine-blown bodies to which are sealed heavy-beaded, heavy-tubing necks, tooled for No. 9 PTFE color-coded keyhole stoppers. For replacement stoppers see No. 7630. The graduation line is sharp and permanent. Large white block letters make the inscription easy to read. These Class…

Calibrated to Class A ASTM E-542 and E-288 Supplied with a certificate of identification Traceable to NIST standards The graduation line is sharp and permanent. Large white block letters make it easy to read. Supplied with a Standard Taper stopper.

PYREX® VISTA volumetric flasks provide precise volume measurement. The necks are tooled for Standard Taper glass stoppers. The graduation line is sharp and permanent and large blue block letters make the inscription easy to read. The 1 mL and 2 mL sizes are test tube shaped.  These Class A…

Calibrated "to contain" at 20°C Accuracy tolerances approximately twice those specified for Class A

Borosilicate, with penny head Conforms to ASTM Standard E 675 Size Standard Taper 13 has solid plug; size Standard Taper 38 has recessed bottom Standard Taper designation indicates the approximate diameter of the ground zone at its widest (gauging) point.

…to Class A tolerances in accordance with ASTM E-542 and E-288. Each flask is individually serialized and supplied with a Certificate of Identification and Capacity, traceable to NIST standards. For your convenience, these flasks are supplied with No. 9 Standard Taper red low actinic glass stoppers.

…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…

Pennyhead stoppers are generally used in flasks and separatory funnels.

Stoppers are used with laboratory glassware such as flasks and separatory funnels. PTFE has excellent chemical resistance and resists freezing in ground glass joints Remove the colored polyethylene handle from the PTFE stopper before cleaning or exposing to temperatures above 80 °C …

…Grooves in the sides help prevent slippage. The flat top allows the stopper to stand on its head, which frees the user’s hand and minimizes potential contamination. This stopper is interchangeable with other common flask stoppers and fits all standard labware of comparable standard taper size.

Butyl stoppers can be used when PTFE is not required. Butyl/PTFE septa are an economical choice with low background peaks. Molded PTFE/butyl septa offer the tightest seal of all PTFE items, as well as low background peaks. PTFE/silicone septa are excel

Separatory Funnel, Sure Grip, Glass or PTFE Stopper, Synthware, Capacity: 500-2000mL available, Stopper Size: #27, PTFE Stopcock Bore: 4mm, Straight section between globe and stopcock provides a sure grip while shaking and also aids in clamping.

Separatory Funnel, Squibb, Glass Stopcock, Synthware, Capacity: 30-1000mL available, Stopper Size: #13, #16, #22, or #27, Stopcock Bore: 2 or 4mm, Supplied with flask length glass stopper.

…PYREX® keyhole stoppers are made from polytetrafluoroethylene (PTFE) and conform to Standard Taper stopper dimensions. The color-coded keys make sorting and selecting the correct size much faster and easier. These stoppers may be used in place of conventional glass Standard Taper flask stoppers.

Separatory Funnel, PTFE Stopcock PTFE or Glass Stopper Capacity: 10-1000mL Stopper Joint: 14/20, 19/22, 24/40, 29/42, No. 13, No. 22, No. 27 and No. 16 available Stopcock Bore: 2 or 4mm

Spectral transmission varies from 0 at 300 nm to 4% at 500 nm With barrel-shaped, No. 27 Standard Taper stopper Capacity: 250 mL The protective color is an integral part of the flask, which retains the mechanical strength, chemical stability and thermal resistance of PYREX brand…

Name Squibb Separatory Funnel with PTFE Stopcock and Plastic Stopper Capacity (mL) 500 Stopcock Bore Size (mm) 4 Standard Taper Stopper Size 27 Stem Length (mm) 60 Shelf-Pack Qty 1 Case Qty 4   …

Permanent graduation line Machine-blown bodies Heavy-beaded, heavy-tubing necks are tooled for polyethylene stopper Stopper is made with a closed bottom and is of linear, high-density polyethylene to conform to Standard Taper stopper dimensions

With barrel-shaped Standard Taper glass stopper Calibrated to contain at 20°C

…(PTFE) stopcock and a strong, lightweight No. 27 Standard Taper glass stopper. The PTFE plug fits into the micro-finish barrel The plug also reduces freezing problems and grease contamination For replacement glass Standard Taper stoppers, see No. 7650; for PTFE stopcock plugs, see…

Consists of bottle with hex base and 45/50 joint, SO2 bubbler stopper with 25 mm diameter Por. C (25-50m) fritted disc, and impinger stopper. Capacity, 275mL. Inlet/outlet are 8mm.