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. Aseptic Fill Bell,70mm
    Manufacturer: Bellco Glass Inc
    Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain aseptic conditions during filling. Attaches to reservoir with rubber tubing. Specifications: Type 1 Class A Borosilicate Glass Dimensions: 70x125mm Tubing Size: 1/2" 2 per case (2 per CS )
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    $137.04
  2. Media Storage Bottle,500mL With 33mm Blk Cap
    Manufacturer: Bellco Glass Inc
    Manufactured from Type1 Class B Borosilicate Glass. Large opening and sloping shoulders facilitate pouring and cleaning. Heavier walls prevent breakage of glass. Media storage bottles have white graduations and a marking area. They are supplied with rubber lined black phenolic screw cap. Specifications: Type 1 Class B Borosilicate Glass Sizes: 500ml (33)mm Cap OD x OAH: 88 x 187 Case Quantity: 12 (12 per CS )
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    $201.81
  3. Aseptic Fill Bell,100mm
    Manufacturer: Bellco Glass Inc
    Manufactured from Type 1 Class A Borosilicate Glass. Ideal for use of filling other glass vessels. Receiving vessel is placed under bell to maintain aseptic conditions during filling. Attaches to reservoir with rubber tubing. Specifications: Type 1 Class A Borosilicate Glass Dimensions: 104x130mm Tubing Size: 1/2" 2 per case (2 per CS )
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    $216.66
  4. Fractional Distillation Column
    Manufacturer: Eisco Scientific LLC
    Fractional Distillation Column (1 per EA )
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    was $32.91 Special Price $26.76
  5. Tube Combustion, Borosilicate glass, open both ends, OD 22mm, Bore 17mm
    Manufacturer: Eisco Scientific LLC
    Tube Combustion, Borosilicate glass, open both ends, OD 22mm, Bore 17mm (1 per EA )
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    was $5.51 Special Price $4.48
  6. Test Tube Plain Glass with bakelite screw cap & rubber liner, 25ml, 150x18mm PK/24
    Manufacturer: Eisco Scientific LLC
    Test Tube Plain Glass with bakelite screw cap & rubber liner, 25ml, 150x18mm PK/24 (24 per PK )
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    was $59.40 Special Price $48.31
  7. Stopper-Flat Head, borosilicate glass, Solid, Cone 24/29
    Manufacturer: Eisco Scientific LLC
    Stopper-Flat Head, borosilicate glass, Solid, Cone 24/29 (1 per EA )
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    was $5.35 Special Price $4.35
  8. Hollow Hex Borosilicate glass Stopper with Round end Cone Size 12/21
    Manufacturer: Eisco Scientific LLC
    Hollow Hex Borosilicate glass Stopper with Round end Cone Size 12/21 (1 per EA )
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    was $2.53 Special Price $2.06
  9. Chromatography Column, Length: 300mm, Socket: 19/26
    Manufacturer: Eisco Scientific LLC
    Chromatography Column, Length: 300mm, Socket: 19/26 (1 per EA )
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    was $37.91 Special Price $30.84
  10. Photoetch Coverslip 12mm German Glass
    Manufacturer: Bellco Glass Inc
    Ideal for florescence and con-focal microscopy Size: 12mm round od Material: German glass ( d-263m) Grid pattern: diamond pattern 100 alphanumeric coded squares Each square measures 0.6mm x 0.6mm (25 per CS )
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    $172.73
  11. Petri Dish, outer dia 100 x 17mm height, borosilicate glass
    Manufacturer: Eisco Scientific LLC
    Petri Dish, outer dia 100 x 17mm height, borosilicate glass (1 per EA )
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    was $9.91 Special Price $8.06
  12. Stopper-Penny Head, borosilicate glass, Solid, Cone 19/26
    Manufacturer: Eisco Scientific LLC
    Stopper-Penny Head, borosilicate glass, Solid, Cone 19/26 (1 per EA )
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    was $3.53 Special Price $2.87
  13. 200ml Spare Extractor for Soxhlet Apparatus Socket Size 50/42 Cone Size 24/29
    Manufacturer: Eisco Scientific LLC
    200ml Spare Extractor for Soxhlet Apparatus Socket Size 50/42 Cone Size 24/29 (1 per EA )
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    was $49.05 Special Price $39.90
  14. 500 ml Flat Bottom Basin Evaporating Borosilicate Glass 131 mm OD
    Manufacturer: Eisco Scientific LLC
    500 ml Flat Bottom Basin Evaporating Borosilicate Glass 131 mm OD (1 per EA )
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    was $43.89 Special Price $35.70
  15. Hollow Hex Borosilicate glass Stopper with Round end Cone Size 19/26
    Manufacturer: Eisco Scientific LLC
    Hollow Hex Borosilicate glass Stopper with Round end Cone Size 19/26 (1 per EA )
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    was $3.76 Special Price $3.07
  16. Glass Steam Distillation Apparatus for Essential Oil Extraction
    Manufacturer: Eisco Scientific LLC
    Glass Steam Distillation Apparatus for Essential Oil Extraction (1 per EA )
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    was $335.73 Special Price $273.07
  17. Stainless Steel 5/16OD Cooling Coil 10L For 10L Bioreactor Systems
    Manufacturer: Bellco Glass Inc
    Heating and cooling coils are used for cell culture temperature manipulation within the bioreactor vessel. Must be hooked up to a water circulating mechanism for heating or cooling. SST cooling coils For 10l bioreactor systems - English threads Tubing Specifications" 5/16" OD Material: 316L SST with Electropolish Finish Overall Length: 17 5/8" OD of Coil: 4 5/8" Number of turns: 5 (1 per EA )
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    $562.54
  18. TUBE, TEST, 12 X 75MM,PK48
    Manufacturer: Eisco Scientific LLC
    TUBE, TEST, 12 X 75MM,PK48 (48 per PK)
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    was $17.33 Special Price $14.09
  19. United Scientific® Stopper, Glass, Solid, #22
    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 $17.50 Special Price $12.26
  20. 15 ml Flat Bottom Basin Evaporating Borosilicate Glass 50 mm OD
    Manufacturer: Eisco Scientific LLC
    15 ml Flat Bottom Basin Evaporating Borosilicate Glass 50 mm OD (1 per EA )
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    was $9.55 Special Price $7.76
  21. Centrifuge Tube 25ml, Conical, height 125mm, OD 22mm, boro. glass, graduated
    Manufacturer: Eisco Scientific LLC
    Centrifuge Tube 25ml, Conical, height 125mm, OD 22mm, boro. glass, graduated (1 per EA )
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    was $4.22 Special Price $3.43
  22. Crow Receiver 100ml, borosilicate glass, class 'B'
    Manufacturer: Eisco Scientific LLC
    Crow Receiver 100ml, borosilicate glass, class 'B' (1 per EA )
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    was $25.69 Special Price $20.90
  23. Condenser - Graham, Socket size 29/32 & Cone size 29/32, Effective length 30cm.
    Manufacturer: Eisco Scientific LLC
    Condenser - Graham, Socket size 29/32 & Cone size 29/32, Effective length 30cm. (1 per EA )
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    was $41.05 Special Price $33.39
  24. Centrifuge Tube 25ml, Conical, height 125mm, OD 22mm, boro. glass
    Manufacturer: Eisco Scientific LLC
    Centrifuge Tube 25ml, Conical, height 125mm, OD 22mm, boro. glass (1 per EA )
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    was $4.20 Special Price $3.41
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