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. Bellco Glass, Inc - Autoblot Tube,70x300mm
    Manufacturer: Bellco Glass Inc
    Manufactured from medium wall Borosilicate Glass Type 1 Class A, with permanent graduations designed for DNA/RNA protocols. Includes high temperature red PBT cap with PTFE faced silicone liner. Replacement cap 5639-90045 (2 per CS )
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    $261.23
  2. United Scientific® Stopper, Glass, Solid, #13
    Manufacturer: United Scientific Supplies
    Solid penny head glass stoppers have an interchangeable ground joint. For use with ground jointed glassware such as flasks and separatory funnels. (1 per EA )
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    was $9.05 Special Price $6.33
  3. Crow Receiver 50ml, borosilicate glass, class 'B'
    Manufacturer: Eisco Scientific LLC
    Crow Receiver 50ml, borosilicate glass, class 'B' (1 per EA )
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    was $22.82 Special Price $18.56
  4. Economy Roller Apparatus, 110V, 4 Position W/ All Position Drive
    Manufacturer: Bellco Glass Inc
    The Bellco Economy Roller Apparatus is a variable speed two or four bottle roller apparatus used for the purpose of producing animal cells or cell products. This small sized unit is ideal for experimental and pilot-scale cell culture. Methods developed on this unit can easily be scaled up using the same technology to production sized units with a capacity of 90, 100 or 172 bottles. Bellco’s full size modular units can be increased in capacity in 10 bottle increments as well. The unit features a heavy-duty DC motor and solid-state electronics for reliable operation. The unit includes All-Position Drive belts so that every roller rotates, thus preventing slippage of light-weight plastic bottles. An analog tachometer displays bottle speed. Bellco’s unique hex-shaped shafts prevent roller slippage and produce positive drive. (1 per EA )
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    $2,073.47
  5. Stainless Steel Tube Rack, 18mm-40P 4x10 Spacing
    Manufacturer: Bellco Glass Inc
    Will not rust or deteriorate in water baths or co2 atmospheres. Manufactured from 303 stainless steel with electropolish finish. Each opening rack 13/16" (20.6mm) Tube size: 18mm Spacing: 4x10 holds 40 tubes Dimensions: 5 1/2" x 3 3/4" x 3 11/16" WIRE SPECIFICATIONS: SIDE & UPRIGHTS: .135"OD WIRE, CROSS WIRE: 0.063" OD WIRE, BTTM MESH: 1/4" Minimum order requirement: 5 each (1 per EA )
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    $105.00
  6. Vacuum Factional Distillation - Secure Joint
    Manufacturer: Eisco Scientific LLC
    Vacuum Factional Distillation - Secure Joint (1 per EA )
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    was $165.62 Special Price $134.72
  7. TEST TUBES - Flat Bottom, 15 ML, 25 X 72 MM, PACK OF 24
    Manufacturer: Eisco Scientific LLC
    TEST TUBES - Flat Bottom, 15 ML, 25 X 72 MM, PACK OF 24 (24 per PK )
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    was $52.53 Special Price $42.72
  8. Splash Head Vertical Pear Shape, Socket size 14/23, Cone size 14/23
    Manufacturer: Eisco Scientific LLC
    Splash Head Vertical Pear Shape, Socket size 14/23, Cone size 14/23 (1 per EA )
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    was $26.40 Special Price $21.47
  9. Adapter Expansion, Socket size 19/26, Cone size 14/23
    Manufacturer: Eisco Scientific LLC
    Adapter Expansion, Socket size 19/26, Cone size 14/23 (1 per EA )
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    was $13.00 Special Price $10.57
  10. United Scientific™ Spot Plate, Porcelain, 30 Wells
    Manufacturer: United Scientific Supplies
    Color-reaction or spot plates, glazed except for bottom surface. (1 per EA)
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    was $40.95 Special Price $31.05
  11. Screw Cap Assembly,38mm
    Manufacturer: Bellco Glass Inc
    Black Phenolic Screw Cap Assembly For Adjustable Hanging Bar Spinner Flask Black phenolic screw caps are manufactured from specially formulated phenolic resin to resist the effects of temperature and steam autoclaving. They have a non-toxic white rubber liner for all general culture applications. Consists of screw cap liner and stopper or compression fitting. 38mm. (1 per EA )
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    $41.13
  12. United Scientific™ Gas Measuring Tube, Borosilicate, 50Ml
    Manufacturer: United Scientific Supplies
    Borosilicate glass tube with 50ml capacity is closed at the zero end to facilitate gas measurement. Features top-down graduations in durable white enamel, at 0.5ml intervals, from 0.5–50ml. Tube measures 650mm long and 13mm in diameter. (1 per EA )
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    was $20.70 Special Price $15.08
  13. Adapter Expansion, Socket size 34/35, Cone size 24/29
    Manufacturer: Eisco Scientific LLC
    Adapter Expansion, Socket size 34/35, Cone size 24/29 (1 per EA )
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    was $17.09 Special Price $13.90
  14. 3-Port Harvest Assembly, 15L For VSA Vessels
    Manufacturer: Bellco Glass Inc
    Size: for standard Over Head Drive 15l vessel To fit gl45 vertical sidearms Material: 316l SST with electropolish finish, ra 32 or better, inside & out Dimensions:harvest tube (3/8"od)-1"above slug,16" insertion length, approx Additon tube (1/4"OD) - 1" above slug, 2 21/64" below Vent tube (1/4" OD) - 1" above slug, .975" below Supply with 45mm PP blue open top screw cap & white silicone gasket (1 per EA )
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    $397.46
  15. Bellco Glass, Inc - Oven Rocker Tray
    Manufacturer: Bellco Glass Inc
    Stainless steel rocker platform fit Bellco micro and mini ovens. Platform has 3 settings at 2.5 degree to 6 degrees from horizontal and adapts to existing rotisserie hardware. (1 per EA )
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    $1,061.52
  16. Test Tube, light wall, cap. 12ml, 100x16mm, boro. glass Pack of 48
    Manufacturer: Eisco Scientific LLC
    Test Tube, light wall, cap. 12ml, 100x16mm, boro. glass Pack of 48 (48 per PK )
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    was $26.20 Special Price $21.32
  17. Test Tube Plain Glass with bakelite screw cap & rubber liner, 20ml, 150x16mm PK/24
    Manufacturer: Eisco Scientific LLC
    Test Tube Plain Glass with bakelite screw cap & rubber liner, 20ml, 150x16mm PK/24 (24 per PK )
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    was $56.91 Special Price $46.28
  18. 3-Port Sparger Assembly W/Holes, 36L For VSA Vessels
    Manufacturer: Bellco Glass Inc
    Material: 316L SST with Ra Finish 32µ or better - inside & out Tubing Specifications: .250" OD x .152" ID Vent Port: 1.0" long - above & below cap slug Addition Port: 1.0" long above cap slug & 16 1/14"(approx) below cap slug Media Port: 1.0" long above cap slug with 1 3/4" bend radius & 12 25/32" long Ten (10) drilled holes (.040"). Supply Cap & Liner (1 per EA )
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    $410.37
  19. Bell-Flo Complete, 250mL
    Manufacturer: Bellco Glass Inc
    Manufactured from type 1 class a Borosilicate glass. Bottom indent and 3 vertical baffles for optimal mixing. Sidearm cap: 32mm Center cap: 70mm Dimensions: 150" x 85" Flask size: 250ml (1 per EA )
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    $9,366.03
  20. TUBE, TEST, 20 X 150MM,PK/24
    Manufacturer: Eisco Scientific LLC
    TUBE, TEST, 20 X 150MM,PK/24 (24 per PK)
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    was $19.16 Special Price $15.59
  21. Adapter Receiver Delivery, Long Stem, Socket size 29/32, Length 200mm
    Manufacturer: Eisco Scientific LLC
    Adapter Receiver Delivery, Long Stem, Socket size 29/32, Length 200mm (1 per EA )
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    was $20.24 Special Price $16.46
  22. Cone - Single, size 24/29
    Manufacturer: Eisco Scientific LLC
    Cone - Single, size 24/29 (1 per EA )
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    was $10.47 Special Price $8.52
  23. Adapter Receiver Delivery, Short Stem, Socket size 19/26, Length 65mm
    Manufacturer: Eisco Scientific LLC
    Adapter Receiver Delivery, Short Stem, Socket size 19/26, Length 65mm (1 per EA )
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    was $11.75 Special Price $9.56
  24. 200mm Condenser Liebig - Screw Thread 19/26 Socket / Cone Size
    Manufacturer: Eisco Scientific LLC
    200mm Condenser Liebig - Screw Thread 19/26 Socket / Cone Size (1 per EA )
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    was $53.31 Special Price $43.37
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