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Glass Test Tube laboratory products
Glass Test Tube
HomeProductsBasic Laboratory ConsumablesGlass Test Tube
BASIC LABORATORY CONSUMABLES

Glass Test Tubes for Laboratory Testing, Culture and Sample Storage

Glass test tubes can be made from high borosilicate glass, neutral glass, low borosilicate glass, or sodium calcium glass, suitable for sample handling, experimental testing, microbial culture, reagent dispensing, and short-term storage in laboratory applications.

Transparent glass test tubes facilitate observation of sample color, sediment, liquid level, and reaction processes, while amber glass test tubes reduce light exposure to samples, suitable for handling, preservation, and transportation of photosensitive samples and reagents. These products are offered with straight mouth, beaded rim, and threaded mouth designs, and include options such as round bottom, flat bottom, graduations, caps, and sealing rings.

Three round-bottom glass test tubes: capped, threaded, and straight-mouth amber.
Type

Glass test tubes can be selected according to tube opening structure, tube bottom shape, and sealing method.

  • Straight-Rim Glass Test Tube: Features a flat, straight mouth, suitable for routine experiments, sample observation, liquid mixing, and short-term storage.
  • Beaded-Rim Glass Test Tube: The tube opening is rolled to form a rounded rim, facilitating pouring, handling, and compatibility with certain stoppers or sealing components.
  • Threaded Glass Test Tube: Can be used with caps and sealing rings, suitable for sample cultivation, storage, transport, and applications that require reducing contamination, volatilization, or leakage.
  • Round-Bottom and Flat-Bottom Options: The common round bottom design facilitates liquid mixing, heating, and observation, while the flat bottom design can stand independently under suitable conditions, making it suitable for sample storage, culturing, and aliquoting.
Specification

Material:3.3 high borosilicate glass, neutral borosilicate glass, low borosilicate glass, sodium calcium glass

Dimensions:10 × 75 mm, 12 × 75 mm, 15 × 150 mm, 18 × 150 mm, 25 × 200 mm, etc.

Capacity:Approximately 3 mL, 5 mL, 10 mL, 25 mL, 50 mL, 75 mL, etc.

Color:Transparent glass, amber glass

Tube Opening Structure:Straight mouth, beaded rim, threaded mouth

Tube Bottom Structure:Round bottom, flat bottom

Configuration:With scale/without scale, with cap/without cap, sealing ring available

Customization:Supports customization of size, capacity, color, tube opening, tube bottom, and packaging

Table 1: Specification of the Glass Test Tubes
No.TypeMaterialOuter Diameter × LengthReference CapacityColorCap OptionsPackaging
GTT-PR-1075Straight-RimBorosilicate Glass / Neutral Glass / Sodium Calcium Glass10 × 75 mmApprox. 3 mLTransparent / Amber ColorNo CapCustomized Packaging
GTT-PR-1275Straight-RimBorosilicate Glass / Neutral Glass / Sodium Calcium Glass12 × 75 mmApprox. 5 mLTransparent / Amber ColorNo CapCustomized Packaging
GTT-PR-12100Straight-RimBorosilicate Glass / Neutral Glass / Sodium Calcium Glass12 × 100 mmApprox. 8 mLTransparent / Amber ColorNo CapCustomized Packaging
GTT-FR-15125Beaded-RimBorosilicate Glass / Neutral Glass15 × 125 mmApprox. 10 mLTransparent / Amber ColorNo CapCustomized Packaging
GTT-FR-15150Beaded-RimBorosilicate Glass / Neutral Glass15 × 150 mmApprox. 15 mLTransparent / Amber ColorNo CapCustomized Packaging
GTT-FR-18150Beaded-RimBorosilicate Glass / Neutral Glass18 × 150 mmApprox. 25 mLTransparent / Amber ColorNo CapCustomized Packaging
GTT-TH-RB-15125Threaded Round-BottomBorosilicate Glass / Neutral Glass15 × 125 mmApprox. 10 mLTransparent / Amber ColorPolypropylene Cap / Silicone Sealing RingCustomized Packaging
GTT-TH-RB-15150Threaded Round-BottomBorosilicate Glass / Neutral Glass15 × 150 mmApprox. 15 mLTransparent / Amber ColorPolypropylene Cap / Rubber Sealing RingCustomized Packaging
GTT-TH-FB-25150Threaded Flat-BottomBorosilicate Glass / Neutral Glass25 × 150 mmApprox. 50 mLTransparent / Amber ColorAluminum Cap / PTFE Sealing RingCustomized Packaging
GTT-TH-FB-25200Threaded Flat-BottomBorosilicate Glass / Neutral Glass25 × 200 mmApprox. 75 mLTransparent / Amber ColorAluminum Cap / PTFE Sealing RingCustomized Packaging
Features
  • Good sample stability. Reduces reaction interference between sample and container, suitable for experiments requiring high sample purity.
  • Reliable heat resistance. High borosilicate glass test tubes have good thermal stability, suitable for routine heating and some sterilization scenarios.
  • Clear observation. The transparent glass tube body makes it easy to observe sample color, sediment, reaction process, and cultivation status.
  • Optional light protection. Amber glass test tube reduces light impact, suitable for storing, handling, and transporting photosensitive samples and reagents.
  • Safer sealed storage.: Threaded glass test tube can be used with caps and sealing rings to minimize contamination, evaporation, and leakage risks.
  • Good specification consistency. Product size and structure are relatively uniform, ideal for daily laboratory use, bulk purchasing, and standardized experimental procedures.
Applications

Glass test tubes are suitable for various basic laboratory operations and can be used for the following experimental scenarios based on different sample types and experimental procedures:

  • Microbial culture
  • Sample storage
  • Biochemical reactions
  • Analytical testing
  • Clinical testing
  • Reagent dispensing
  • Preservation of photosensitive samples
Stoppered glass test tubes with colored liquid samples for storage and later testing.
Glass test tubes used for sample storage
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