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. Heavy Duty Recriprocating Shaker Complete, 115V With 16 Sq Tray& Linerin
    Manufacturer: Bellco Glass Inc
    The unit is a laboratory shaker with a reciprocating stroke adjustable for 1”, 1 ¾” & 2 ½”. It is designed to shake clear plastic culture bags with working volumes between 5 & 10 liters, as well as function as a general purpose laboratory shaker. The unit incorporates a digital speed control and 50W brushless DC motor and runs on plastic raceways for minimal noise. Speed is controlled with a numbered dial located on the front of the unit and ranges from 5 to 150 cycles/min approximately. Units are powered by standard 24V in-line power supplies and are CE compliant. The OptimaTM bag trays are sold separately. (1 per EA )
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    $3,873.55
  2. Low Profile Single Pan Hot Shaker,115V
    Manufacturer: Bellco Glass Inc
    Bellco’s new Low Profile Hot Shaker provides gentle, large orbit shaking motion combined with precise temperature control. Designed to be the perfect solution for incubation of electrophoretic gels and filter hybridization media, the Low Profile layout promotes easy access to the independent microprocessor driven temperature controller and reliable control of shaking speeds up to 75 oscillations per minute. The quiet brushless drive motor and repeatable, stable temperature settings from 5°C above ambient up to 99.9°C may be effectively used in most biochemical, chemical and microbiological applications. (1 per EA )
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    $5,189.95
  3. Adapter Ptfe 5.5-6.5 14/20
    Manufacturer: Kimble Chase
    Adapters Inlet Universal with Hose Connection Size 21. [standard taper] Joint 14/20. Hose Connection #2. Accommodation Range (mm) 5.5/6.5 Converts plain stem type funnels for vacuum filtration. Provides a combination inlet and vent tube on a single neck vessel. (1 per EA)
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    was $168.24 Special Price $166.44
  4. Adapter Distilling
    Manufacturer: Kimble Chase
    Adapters Distilling [standard taper] Joints 14/20. Distance Between [standard taper] Joints (mm) 100 Useful in the sub-boiling separation of mixtures having volatile components. Joints are parallel. (1 per EA)
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    $113.97
  5. Distn Column 200mm 19/22
    Manufacturer: Kimble Chase
    Distillation and Reactors Column Distilling/Condensing [standard taper] Joints 19/22. Hose Connections #1. Column Height (mm) 200 With a [standard taper] outer joint at top and a [standard taper] inner drip joint at bottom. Indentations at the bottom for supporting packing material. (1 per EA)
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    $159.91
  6. Sparger Fritted 5ml Left
    Manufacturer: Kimble Chase
    Purge and Trap Sparger U-Shaped for Vial Autosamplers Sparger Fritted 5 mL Left Stem (2000/3000) These U-shaped spargers are designed for use with the Tekmar Purge and Trap Concentrators when using either the AQUATek 50 or ALS 2050 vial auto-samplers. (1 per EA)
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    was $262.96 Special Price $262.89
  7. 10X75 Boro Is Green 5 Cs Min
    Manufacturer: Kimble Chase
    Mark-M Blood Typing Tubes Size: 10x75mm. Volume: 3mL. Color: green. IS imprint. Made from borosilicate glass. Manufactured with a fused ceramic paint to form writing labels which will not separate from the glass tube.
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    was $179.20 Special Price $149.11
  8. Condenser Sublimator
    Manufacturer: Kimble Chase
    Microscale Sublimator [standard taper] 14/10 Funnel Condenser Only Sublimation assembly with vertically adjustable condenser tube for use with micro-scale vessels. (1 per EA)
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    $21.13
  9. Kit 14/10 Intrm Ekono-Case
    Manufacturer: Kimble Chase
    Labsets kits Organic Chemistry Microscale Threaded / [standard taper] 14/10 Intermediate EKONO-CASE Intermediate [standard taper] 14/10 Microscale Kit The 746000 Series MICROFLEX Kits feature [standard taper] 14/10 standard taper connections. (1 per EA)
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    $694.67
  10. Foam Insert Set
    Manufacturer: Kimble Chase
    KONTESbrand Organic Chemistry Labset Microscale Kit Foam Insert Set Only Williamson (1 per EA)
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    $18.89
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