Viton o-ring is stocked in brown 75 durometer. They are suitable for acids, aliphatic hydrocarbons, oxidizing agents and all petroleum products. Viton has a low compression set and high temperature resistance. Viton is especially good for vacuum service and low gas permeability and has a useful…

One of the most thermally stable elastomeric materials available, Perfluoro is a family of perfluoroelastomer compounds designed to provide superior chemical resistance, and they offer a cost savings over similar o-rings such as Kalrez® 4079 and Chemraz®. Perfluoro o-rings are stocked in…

Buchner style filter funnel having a lower standard taper inner joint and serrated tubulation for connection to a vacuum source. Disc diameters and height above the disc are the same as CG-1402.

Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center neck and vertical side necks. Flasks with 29/26 center necks have a groove tooled just below the grind to aid in clamping of the flask.

Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center neck and 20º angled side necks. Flasks with 29/26 center necks have a groove tooled just below the grind to aid in clamping of the flask.

SHAKER RACK FOR 50ML BIOREACTION TUBES, Stainless Steel Construction Angle Adjustment of up to 30° Silicone Gasket Holds Tube Securely Can be used with Skirted or Standard Tubes Fits All Shakers with a top plate of at least 14” x 14” Our unique 49 position shaker…

Round bottom, HEAVY WALL, four neck flask with standard taper outer joints on the center and vertical side necks.

Heavy wall pressure vessels have an internal thread for use with PTFE bushings as pressure seals. The unique design allows hand tightening and loosing for easy access into the vessel. O-ring is positioned on the bushing above the thread for improved sealing. Vessels are useful for pressure…

Design of funnel permits addition of solvents to flash chromatography columns without disturbing the silica-gel / packing layer. Lower end of the funnel is closed and the stem has a series of small holes through which the solvent drains. Top of the funnel is 75mm (3in) in diameter with the stem…

The new and improved CG-1167 HPLC Cap system provides the safest and most economical way of storing high performance, low pressure liquid chromatography mobile phase, sparging preventing bubbles from entering the system as well as collecting sample waste.The bottle is blue tinted plastic coated…

Porous discs for use in fabrication of special glass apparatus. Available in F, M, C and XC porosities. Pressure Limits: Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Thermal Limits: Fritted glassware…

The unique design of our Tru-Stir™ stirrer shaft coupling eliminates the need to use rubber hose or universal adapters to attach your stirrer shafts to overhead stir motors. Coupling incorporates a unique helical stainless steel spring permitting up to 1/4” of offset misalignment and…

An inexpensive bottle cap for either GL-45 or GPI-38 threads that permits standard solvent or media bottles to be used as an HPLC reservoir. Caps have two holes to accomodate 1/8" tubing and one hole that accepts a standard luer inner joint. Caps are made from polypropylene and the inserts are…

Kalrez® 4079 perfluroelastomer combines the elastomeric properties of Viton with the chemical resistance of PTFE, making it the best possible o-ring material available. Kalrez® 4079 should be considered for service in high temperature, corrosive environments such as: Polar Solvents…

Pyrex Borosilicate capillary Tubing, single lengths

General purpose column having a PTFE stopcock and a top Rodaviss® outer joint. Can be used as a gravity eluted column or a flash column (as described by W.C. Still, M. Kahn and A. Mitra of Columbia University in JOURNAL OF ORGANIC CHEMISTRY 43, 2923 [1978], and covered in U.S. Patent Number…

These stoppers are suitable for practically all general laboratory uses. Composition ensures resiliency and pliability over a long period and withstands laboratory conditions without hardening. The dimensions are in accordance with specifications established by the N.B.S. and are low in free sulfur…

Quadruple baffled Erlenmeyer flasks are sterile, non-pyrogenic and manufactured with polycarbonate resin. Flasks are supplied with either exclusive DuoCap® designed for both aerobic and anaerobic applications (for aerobic applications the cap utilizes a 0.22µm pore size PTFE membrane for…

Pyrex® or Duran® borosilicate plate glass. The 1/16in, 1/8in and 1/4in thick plates have edges that are cut and swiped. The 1/2in thick and over have ground edges.

Similar to CG-3026 and CG-3027 except with two holes. These stoppers are suitable for practically all general laboratory uses. Composition ensures resiliency and pliability over a long period and withstands laboratory conditions without hardening. The dimensions are in accordance with…

TUBES, CENTRIFUGE, 50ML, Centrifuge tube with a short, conical bottom and 24-415 GPI threaded top. Fits I.E.C. shield number 320. Supplied complete with a Poly-Seal® polypropylene lined phenolic screw cap. TEST TUBE TONGS, Tongs are made of zinc coated steel, 6" overall length. Spring…

General purpose column has a PTFE stopcock and a top outer joint. Glass wool (not supplied) is used to support column packing. Column is constructed using MEDIUM WALL TUBING. Can be used as a gravity eluted column or a flash column (as described by W.C. Still, M. Kahn and A. Mitra of Columbia…

Medium wall Pyrex borosilicate tubing, see specifications tab at the bottom of this page. Sold either by the length or by the case, see suggested products tab at the bottom of this page.  *** ALL WEIGHTS AND QUANTITIES ARE APPROXIMATE ***

Stir Bar Kit, Magnetic, Egg-Shaped, PTFE, to consist of the following: 6ea CG-2005-10, 6ea CG-2005-12, 3ea CG-2005-14, 2ea CG-2005-15, 1ea CG-2005-16

Round bottom, HEAVY WALL three neck flask with standard taper outer joints on the center and side necks. Indentations increase agitation of the contents of the flask during stirring. Please Note: Morton Style Reactors/Flasks Not Suitable For Vacuum.

Bushing style adapter having a lower standard taper inner joint and outer joint ground in the bore of the adapter. Adapters having a 10/18 or 10/30 outer member in the bore are used to insert thermometers into apparatus.

Grease-Free PTFE stirrer bearing for use under moderate vacuum. The bearing consists of a PTFE standard taper body, Nylon compression cap, PTFE Insert/bushing and a Nylon loosening nut. The PTFE insert/bushing provides only glass and PTFE contact with the reaction. Loosening nut above the standard…

Adapters permit the connection of standard laboratory dram sample vials directly to the vapor tube or a bump trap of a rotary evaporator. Adapters have a top outer joint of the listed size and a 20-400 G.P.I. thread at the bottom. A PTFE-lined, polypropylene, double-threaded connector attaches the…

Tube is designed for the collection and storage of gas samples. The 125mL has a sidearm O.D. of 9mm, the 250 and 500ml have a sidearm O.D. of 13mm, but with the addition of a syringe sampling port for use with a CG-3022-05 or CG-3022-22 septa. Supplied complete with one CG-3022-05 red rubber septa.

Flask has 3 baffles on the lower outside edge of the flask to maximize oxygen transfer to the culture medium when used on an orbital shaker. The polypropylene vented caps have a 0.22µm (PTFE) hydrophobic membrane to allow sterile gas exchange while preventing contamination. Since these caps…

Round bottom, HEAVY WALL single short neck flask with a standard taper outer joint. The 29/26 flasks have a groove tooled just below the grind to aid in clamping of the flask. Please note: There are separate listings for different capacity single neck round bottom flasks.