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. Impeller Assembly, 25mL
    Manufacturer: Bellco Glass Inc
    Glass shaft impeller assembly for 1967-style hanging bar spinner flask. Consist of ptfe magnet holder and ptfe coated magnet. Glass shaft ptfe magnet Size: 25ml (1 per EA )
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    $27.64
  2. Low Profile 2-Port Stainless Steel Assembly 6L
    Manufacturer: Bellco Glass Inc
    SST Low Profile Impeller Assembly For 6000mL Low Profile Vessels. Requires Over Head Drive & cap assembly Material: SST 316l Consist of: dust shield, shaft, paddle, locking ring, washer, cotter pin Four (4) SST set screws: 8-32 x 1/4" Dimensions: 9 1/2" to 12 1/2" oal Paddle size: 3" tall x 5 1/4" wide Fully assembled (1 per EA )
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    $248.58
  3. Round Bottom Marine Impeller, 36L
    Manufacturer: Bellco Glass Inc
    Blade dimension: 4"OD Marine prop – Right-Handed Shaft OAL: 16 1/4 Paddles and impeller assemblies for cell culture Constructed of 316l electropolished stainless steel Reduces shear in delicate cell culture Marine impeller includes 1/2" shaft and impeller blade Omni and z-z paddles are one piece welded, 1/4" shaft (1 per EA )
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    $1,251.84
  4. Internal Overhead Bearing Impeller Assembly, 1L
    Manufacturer: Bellco Glass Inc
    Stainless steel shaft design prevents cell damage and minimizes magnetic decoupling. Sealed internal assembly requires less incubator space. For use with bellco 1965-series standard and water jacketed spinner flasks. Cap size: 100mm Flask size: 1L PADDLE: 3" TALL X 3 1/8" WIDE (1 per EA )
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    $749.51
  5. Internal Overhead Bearing Impeller Assembly,3L
    Manufacturer: Bellco Glass Inc
    Stainless steel shaft design prevents cell damage and minimizes magnetic decoupling. Sealed internal assembly requires less incubator space. For use with bellco 1965-series standard and water jacketed spinner flasks. Cap size: 100mm Flask size: 3l PADDLE: L X W:4 X 3 IN (1 per EA )
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    $757.57
  6. Flat Bottom Adjustable Hanging Bar Spin Complete,1000mL
    Manufacturer: Bellco Glass Inc
    • Designed for the efficient growth of suspension cells at low speeds • Flask Specifications: o 1000 mL flat bottom, Type 1 Class A Borosilicate o Dimensions: 135mm OD x 240mm OAH o Two 45mm Sidearms angled 60º offset center o One 100mm Screw thread center neck o Graduations: 100mL to 1000mL, every 100mL o Includes two 45mm blue PP screw caps and pouring rings • Impeller Assembly Specifications: o Consists of PTFE coated magnet and white Teflon magnet holder • Glass Shaft Specifications: o Type 1 Class A Borosilicate o Dimensions: 7mm OD x 230mm long • Cap Assembly Specifications: o Consists of one 100mm blue PP screw cap with 16.2 mm hole for black compression fitting, 100mm white silicone liner with 15.8mm hole, 7mm black compression fitting (1 per EA )
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    $412.84
  7. Process Bottom Roller Apparatus 8 Deck,100-115V- W/ Battery Backup
    Manufacturer: Bellco Glass Inc
    The Bellco Process Controlled Bottom Drive Roller Apparatus holds up to 50 (see specifications below) full size glass or plastic roller bottles (110 to 120 mm diameter and up to 510 mm in length). The unit features a brushless DC motor and controller that operate at bottle speeds ranging from 0.3 to 9.0 rpm with the ability to select clockwise or counter clockwise direction. Units feature brushless, maintenance-free DC motors with drive assemblies designed for quiet operation. Four corner bumpers and two locking castors (on the front wheel positions) are also provided. Rollers are easily removed for replacement by using the special tool provided with each unit. All-Position Drive facilitates the use of lightweight plastic roller bottles by ensuring rotation at each bottle station, independent of any load configurations. (1 per EA )
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    $11,939.04
  8. Bell-Stir 1P, 115V-1L
    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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    $744.24
  9. Bellco Glass, Inc -High Speed Vertical Lift Impeller-36L Complete
    Manufacturer: Bellco Glass Inc
    H/S Vertical Lift Impeller-36L Complete. Consist Of; 7764-75036 & 7764-76036. Dimensions: (Shaft); 5/8"OD X 23 1/4" Long, (Disk); 5 1/8"OD. 316L Sst (1 per EA )
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    $1,616.81
  10. Round Bottom Marine Impeller,15L
    Manufacturer: Bellco Glass Inc
    Blade dimensions: 5 3/4" x 2" Shaft: 14 1/2" Paddles and impeller assemblies for cell culture Constructed of 316l electropolished stainless steel Reduces shear in delicate cell culture Marine impeller includes 1/2" shaft and impeller blade Omni and z-z paddles are one piece welded, 1/4" shaft (1 per EA )
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    $122.07
  11. United Scientific™ Condenser, Vigreux, 400mm, 24/40 Joint
    Manufacturer: United Scientific Supplies
    400mm Vigreux column with 24/40 joint. A Vigreux column is a type of air condenser where the simple tube has been modified to include an abundance of downward-pointing indentations. This dramatically increases the surface area per unit length of the condenser. (1 per EA)
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    was $69.25 Special Price $52.49
  12. Adapter Gas Inlet 24/40
    Manufacturer: Kimble Chase
    Inlet Adapter Used as a vent or for the introduction of pressure/vacuum. Hose standard taper 24/40 joint. No. 2 Hose Connection. Height: 80mm. (1 per EA)
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    $67.56
  13. Stpk,Plug,3Way,PTFE,2mm
    Manufacturer: Kimble Chase
    PTFE Stopcock Plug Three-Way For KIMAX Reservoir (17456-182 -184 -186 -188) Class B Automatic Self-Zeroing (17550-061 -083 -108 -120) Class A Serialized/Certified (17527-081 -106 -128) Class B Shellbach (17454-705 -727) and Automatic Self-Zeroing Shellbach Burets (17552-158 -191). (6 per CS )
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    was $1,098.83 Special Price $949.20
  14. Tube,Dct,Borosilicate,13X100mm
    Manufacturer: Kimble Chase
    KIMAX Culture Tube Disposable. Borosilicate Glass. Features smooth top and bottom to prevent cuts. Annealed to reduce breakage along stress points. Supplied in shrink wrapped trays to eliminate breaking and contamination. Sizemm: 13x100. Volume: 10ml. (1000 per CS )
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    was $162.73 Special Price $85.64
  15. Adapter Bend Receiver with Vent, socket 14/23, Cone 14/23
    Manufacturer: Eisco Scientific LLC
    Adapter Bend Receiver with Vent, socket 14/23, Cone 14/23 (1 per EA )
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    was $20.24 Special Price $16.46
  16. TUBE, TEST, 16 X 150MM,PK/48
    Manufacturer: Eisco Scientific LLC
    TUBE, TEST, 16 X 150MM,PK/48 (48 per PK)
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    was $30.67 Special Price $24.95
  17. Stainless Steel Overhead Drive Impeller Assembly 6L Full Width
    Manufacturer: Bellco Glass Inc
    Manufactured from 316l stainless steel for standard bioreactor vessels. Use with over head drive motors. PADDLE L X W (IN): 3 X 6 3/4". (1 per EA )
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    $660.58
  18. Stainless Steel Hi-Torq Overhead Drive Impeller, 8L-SW Short Width
    Manufacturer: Bellco Glass Inc
    Hi-torq SST OHD impeller assembly - short width Size:8l For hi-torq motor & cap assembly (7774-40115/40230 & 7764-74000) Similar to 1964-60108 but to accept 1/2" shaft from 7764-74000 cap assembly Material: 316 SST with electropolish finish Paddle size: 3" tall x 6" wide (1 per EA )
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    $673.84
  19. Micro Carrier Spnr Flask Complete,8L
    Manufacturer: Bellco Glass Inc
    Promotes optimal growth of suspension and micro-carrier culture. Impeller height adjust through compression fitting center cap. The indented bottom prevents accumulation of micro-carrier beads under impeller. Size: 8l Center Cap:100mm Sidearm cap: 45mm OD X OAH:237 X 430 (1 per EA )
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    $1,078.36
  20. Stainless Steel 2-Port Assembly, 36L For Angled Sidearms
    Manufacturer: Bellco Glass Inc
    All port assemblies are manufactured from 316l stainless steel and have an electropolish finish. 2- port assemblies have siphon and vent tubes. 3-port assemblies have siphon, fill tube and vent tubes. All port assemblies include a 45mm blue polypropylene cap. (1 per EA )
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    $411.93
  21. Stainless Steel Fitting /Cap, 11mm
    Manufacturer: Bellco Glass Inc
    Probe adapters & compression fittings. Bellco compression fittings are designed using our standard 45 mm blue polypropylene open top caps and white silicone gaskets. A wide variety of fittings are available to allow pH and do monitoring via insertion of these probes into the sidearms of vessels. Bellco probe adapters are designed to allow introduction of threaded probes into vessels through 200 mm stainless steel headplate or a 45 mm vertical sidearm. Probe OD: 11mm Stainless steel fitting w/cap 11mm (1 per EA )
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    $213.11
  22. Internal Overhead Bearing w/ Micro Carrier Flask, 1L
    Manufacturer: Bellco Glass Inc
    Internal impeller decreases risk of contamination. Impeller has an adjustable shaft to align paddle. The large paddle promotes increased oxygenation. Cap size: 100mm Flask size: 1l Dimensions: 135 x 250mm Sidearm cap: 45mm (1 per EA )
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    $1,021.53
  23. Flat Bottom Adjustable Hanging Bar Spin Complete,250mL
    Manufacturer: Bellco Glass Inc
    • Designed for the efficient growth of suspension cells at low speeds • Flask Specifications: o 250 mL flat bottom, Type 1 Class A Borosilicate o Dimensions: 85mm OD x 145mm OAH o Two 32mm Sidearms angled 55º offset center o One 70mm Screw thread center neck o Graduations: 50mL to 250mL, every 25mL o Includes two 32mm blue PP screw caps and pouring rings • Impeller Assembly Specifications: o Consists of PTFE coated magnet and white Teflon magnet holder • Glass Shaft Specifications: o Type 1 Class A Borosilicate o Dimensions: 7mm OD x 155mm long • Cap Assembly Specifications: o Consists of one 70mm blue PP screw cap with 16.2 mm hole for black compression fitting, 70mm white silicone liner with 15.8mm hole, 7mm black compression fitting (1 per EA )
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    $396.94
  24. Centrifuge Bottle,590ml
    Manufacturer: Bellco Glass Inc
    Manufactured from type 1 class a Borosilicate glass. Supplied with a 38-400 black phenolic rubber lined screw cap. Dimensions: 96x173mm Size: 590ml (4 per CS )
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    $392.86
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