This category covers reusable glass apparatus for teaching, research and quality control labs. It includes test tubes in light-wall, rimless, side-arm and screw-cap styles (bakelite caps with rubber liners), graduated glass centrifuge tubes with stoppers or screw caps, crystallizing dishes, glass Petri dishes, evaporating basins, calibrated pycnometers, 300 mL B.O.D. bottles, and ground-joint pieces such as Claisen, vacuum, reducing and expansion adapters and stoppers. Larger setups include Soxhlet extraction apparatus, Kjeldahl distillation sets, water-jacketed flasks, distillation apparatus and organic chemistry glassware kits, plus porcelain and plastic spot plates.

Check the glass type first: borosilicate handles heating and temperature changes far better than soda glass. Match ground-joint sizes exactly, such as 24/40 or 29/42, so adapters, stoppers and flasks fit. Compare capacity, dimensions, wall thickness, graduation or calibration, closure type and pack quantity, and confirm the speed rating before using glass tubes in a centrifuge.

Reusable Glassware: common questions

What is a crystallizing dish used for?

A crystallizing dish is a shallow, flat-bottomed glass dish with straight sides. It is used to evaporate solutions so crystals can form, and also as a water or ice bath, a cover dish, or a container for holding small items. Borosilicate dishes can be heated gently, and versions with a spout make pouring easier.

When should I use glass centrifuge tubes instead of plastic?

Glass centrifuge tubes are chosen for organic solvents that attack plastics, for work where plastic leachables could interfere, and when tubes will be cleaned and reused. They can break under high forces, so use them only within the speed or g-force rating given by the maker, with properly fitting adapters or cushions in the rotor.

What does 24/40 mean on lab glassware?

24/40 is a standard taper ground-glass joint size. The first number is the approximate diameter in millimeters at the wide end of the joint, and the second is the length of the ground section in millimeters. Male (cone) and female (socket) joints with the same numbers fit together, and reducing or expansion adapters connect different sizes.

What is the difference between borosilicate and soda-lime glass?

Borosilicate glass has low thermal expansion, so it tolerates heating and rapid temperature changes much better than soda-lime glass and is more resistant to chemical attack. Soda-lime glass costs less and is used for items that are not heated, such as some jars and display pieces. For heating, autoclaving or flame work, choose borosilicate.

Reusable Glassware

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  1. Connector Pkg/5
    Manufacturer: Kimble Chase
    KONTESbrand Organic Chemistry Labset Microscale Kit Connector Only Williamson (5 per CS )
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    was $50.54 Special Price $49.99
  2. Connector Without Rod Pk/5
    Manufacturer: Kimble Chase
    Labsets kits Organic Chemistry Microscale Thermoplastic Connectors Williamson Improved Standard Item H Connector Only These MICROFLEX Kits feature the patented chaste connectors and specially tooled glassware components providing great versatility. (5 per CS )
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    $45.51
  3. Distillation Head 60 mm
    Manufacturer: Kimble Chase
    Labsets kits Organic Chemistry Microscale Thermoplastic Connectors Williamson Improved Standard Item J Distillation Head 60 mm These MICROFLEX Kits feature the patented chaste connectors and specially tooled glassware components providing great versatility. (1 per EA)
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    $38.30
  4. Stirrer Bearing 24/40
    Manufacturer: Kimble Chase
    Stirrers Bearing Precision Water Cooled [standard taper] Joint 24/40. Use With Shaft O.D. (mm) 10. Hose Connections #2. Approx. Overall Height (mm) 105 Water cooled bearing with a built-in lubricant reservoir for use with a 10 mm O.D. shaft. (1 per EA)
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    was $243.09 Special Price $242.97
  5. Valve Hi Vac PTFE Sz 4
    Manufacturer: Kimble Chase
    Valves Right Angle with Tip O-Ring PTFE Plug HI-VAC Bore Range (mm) 0-4. Approx. Stem O.D. (mm) 9. O-Ring Size Shaft 010. O-Ring Size Tip 5-105 For vacuum applications up to 5 x 10-7 Torr. Designed with a precision external thread for fine control. (1 per EA)
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    was $102.76 Special Price $101.64
  6. Valve Plug Size 8
    Manufacturer: Kimble Chase
    Extraction Apparatus Extractor / Percolator Valve Plug Designed for routine extractions of plant and marine samples. Unit may be used with aqueous or organic solvents. Select from four sizes. Moderate pressure or vacuum may be used to support sample material. (1 per EA)
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    was $47.48 Special Price $47.04
  7. Pickup Adapter 90mm
    Manufacturer: Kimble Chase
    HPLC Cap System Five Valve Recirculation / Filtration Standard ULTRA-WARE Pickup Adapter Standard 90 mm Specially designed to permit the recirculation of mobile phase back into the reservoir while maintaining the helium sparged environment. (1 per EA)
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    $517.57
  8. Pickup Adapter Body 90mm
    Manufacturer: Kimble Chase
    HPLC Adapter Solvent Pickup ULTRA-WARE Pickup Adapter Body 90mm Designed to be used with the Five Valve Four Valve and Filtration caps to provide safe in-line filtration that replaces the traditional pour-and-wait funnel filtration method. (1 per EA)
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    $400.59
  9. Generator, Arsine
    Manufacturer: Wheaton
    Arsine Generator Complete Apparatus follows the silver diethyldithiocarbamate method described in the 18th Edition (1992) of Standard Methods for the Examination of Water and Wastewater method 3500-As C. (1 per EA)
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    was $470.74 Special Price $368.06
  10. Kem-Kit 19/22 Cs & Foam
    Manufacturer: Kimble Chase
    Labsets kits Organic Chemistry Macroscale [standard taper] 14/20 and [standard taper] 19/22 KEM-KITS KEM-KITS contain a selection of basic small scale glassware. (1 per EA)
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    $144.60
  11. Valve Size 2 W/O Plug
    Manufacturer: Kimble Chase
    Valves Right Angle without Tip O-Ring PTFE Plug HI-VAC Valve Without Plug Size 2 Similar to 826510 but without tip o-ring exposure. For vacuum applications up to 5 x 10-7 Torr. Designed with a precision external thread for fine control. This valve can be used as a bleed up to 1/2 a turn. (1 per EA)
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    $71.21
  12. Stir Bear PTFE/Glass 24/40
    Manufacturer: Kimble Chase
    Stirrers Bearing PTFE / Glass [standard taper] Joint 24/40. Shaft (mm) 10. Approx. OAL (mm) 150 Threaded glass ground joint bearings seal against the stirrer shaft by means of a TFE o-ring a precision bore PTFE sleeve bearing and a PTFE tightening screw with lock nut and washer. (1 per EA)
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    $363.88
  13. Valve Plug Size 4
    Manufacturer: Kimble Chase
    Valves Straight without Tip O-Ring PTFE Plug HI-VAC PFTE Plug Size 4 Similar to 826500 but without tip o-ring exposure. For vacuum applications up to 5 x 10-7 Torr. Designed with a precision external thread for fine control. This valve can be used as a bleed up to 1/2 a turn. (1 per EA)
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    $19.43
  14. Luer Adapter Inlet 14/20
    Manufacturer: Kimble Chase
    LUER ADAPTER 14/20 USED WITH DISPOSABLE SYRINGE CARTRIDGES. THIS HELPS REDUCES CROSS CONTAMINATION CONVERTS STANDARD TAPER GLASSWARE TO LUER JOINTS. IT HAS AN INTEGRAL VACUUM CONNECTION INCLUDED. THIS ADAPTER ALSO PRODVIDES EASIER SAMPLE CONCENTRATION AND CLEAN UP. (1 per EA)
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    $130.79
  15. Plug Only Ext Tip Size 4
    Manufacturer: Kimble Chase
    Chromatography Flow Control Adapter with [standard joint] Joint Replacement Plug Lower [standard joint] Joint Plug only. Plug (mm) 4 For use with 420640 and 420650 series chromatography columns or in combination with 420670 series reservoirs. (1 per EA)
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    $23.18
  16. Valve Size 2 W/O Plug
    Manufacturer: Kimble Chase
    Valves Three Way without Tip O-Ring PTFE Plug HI-VAC Valve Without Plug Size 2 Three way configuration without tip o-ring exposure. O-rings are Viton. (1 per EA)
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    $183.42
  17. Valve Extended Tip 4mm
    Manufacturer: Kimble Chase
    Valves Right Angle Extended Tip PTFE Plug HI-VAC Bore Range (mm) 0-4. Approx. Stem O.D. (mm) 9. O-Ring Size 010 Designed with a precision external thread for fine control. (1 per EA)
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    $84.17
  18. Valve Size 4 W/O Plug
    Manufacturer: Kimble Chase
    Valves Right Angle Extended Tip PTFE Plug HI-VAC Valve Without Plug Size 4 Designed with a precision external thread for fine control. The accurately controlled valve seat and the extended tip on the PTFE plug allow semi-needle valve control for both liquids and gases. (1 per EA)
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    $44.19
  19. Valve Size 4 W/O Plug
    Manufacturer: Kimble Chase
    Valves Straight Low Hold Up Extended Tip PTFE Plug HI-VAC Valve Without Plug Size 4 Sidearms are bent to minimize holdup of liquids. O-rings are Viton. (1 per EA)
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    $60.13
  20. Valve Size 12 W/O Plug
    Manufacturer: Kimble Chase
    Valves Right Angle with Tip O-Ring Glass Plug HI-VAC Valve Without Plug Size 12 This valve uses a glass plug (as an alternative to PTFE or CTFE) for applications where the out-gassing plug material is undesireable. All plugs are totally interchangable with other Hi-Vac counterparts. (1 per EA)
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    $111.37
  21. Valve Hi-Vac Size 2 3-Way
    Manufacturer: Kimble Chase
    Valves Three Way without Tip O-Ring PTFE Plug HI-VAC Bore Range (mm) 0-2. Approx. Stem O.D. (mm) 8. O-Ring Size 5-105 Three way configuration without tip o-ring exposure. O-rings are Viton. (1 per EA)
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    $216.93
  22. Glass Demonstration Tube, Borosilicate 3.3, OD – 18 mm, Wall Thickness – 1.8 mm w/ stoppers
    Manufacturer: Eisco Scientific LLC
    Glass Demonstration Tube, Borosilicate 3.3, OD – 18 mm, Wall Thickness – 1.8 mm w/ stoppers (1 per EA )
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    was $14.91 Special Price $12.13
  23. Roller Apparatus Base & 7 Decks, 230V Modular - 40 Pos
    Manufacturer: Bellco Glass Inc
    The Bellco Cell Production Roller Apparatus has been designed for production of animal cells, viruses and cell products. Modular units are available from 5 to 45 bottle positions and allow easy expansion with modular add-on decks. Non-modular production units come in 45 and 50 bottle positions with over 80,000 cm2 of surface area. Rollers have a key design to eliminate slipping and are easily removable for servicing of bearings. Rollers are formulated from a chemical-resistant non-slip EDPM. All units feature a solid state control with heavy-duty DC motor and analog tachometer. Non-modular production models feature rubber bumpers, handles and a slotted rear guard. (1 per EA )
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    $9,637.72
  24. Bellco Glass, Inc -Bell-Stirr 4 Position, 100V -500mL
    Manufacturer: Bellco Glass Inc
    Bellco Magnetic Stirrers are specifically designed for growing both mammalian and bacterial cultures where minimal heat transfer from the magnetic stirrer to the culture vessel is essential. They are ideal for tissue cultures grown in spinner flasks. Bellco incorporates low wattage DC motors to reduce stirrer heat up. Independent power and speed controls allow unit to maintain a speed setting when switched on and off. Powerful magnets rotate on ball bearing shafts for increased coupling and continuous maintenance free service. Polyurethane drive belts resist humidity and temperature. The 100V, 115V & 230V models feature a convenience outlet that allows daisy chaining of up to ten stirrers. Speed range: 30 - 1000 rpm +/- 5% (1 per EA )
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    $1,279.72
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