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  • Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask
  • Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask
  • Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask
  • Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask
  • Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask
  • Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask
Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask

Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask

$0.50-$1.00/ Piece|100 Piece/Pieces(Min. Order)

Customization:

Customized logo（Min.Order: 300000 pieces）
Customized packaging（Min.Order: 300000 pieces）
Graphic customization（Min.Order: 300000 pieces）
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Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Kjeldahl Method Compatibility: Designed for nitrogen analysis in chemical and biochemical processes, enabling precise measurement in laboratory settings.
  • Multi-Purpose Distillation & Storage: Long-neck design facilitates controlled liquid handling, condensation during distillation, and secure storage of volatile or reactive substances.
  • Volume Flexibility: Available in 100ml, 500ml, and 1000ml capacities to accommodate diverse experimental scales.

Key features

  • 1. Borosilicate Glass Material Technology

    • With borosilicate glass, you can withstand extreme temperatures and corrosive chemicals, offering 30% higher thermal shock resistance* compared to standard glass. This ensures durability in demanding laboratory environments.

  • 2. Long-Neck Design for Precision Handling

    • With the long-neck design, you can safely handle liquids without spillage during distillation or pouring, reducing experimental errors compared to flasks with shorter necks.

  • 3. Flexible Volume Options for Versatile Use

    • With customizable capacities (100ml, 500ml, 1000ml), you can adapt to diverse lab needs, eliminating the need for multiple single-purpose flasks*.

  • 4. Optimized for Critical Lab Procedures

    • Designed for Kjeldahl nitrogen analysis and distillation, you can achieve precise chemical reactions and condensation, outperforming general-purpose flasks in specialized workflows.

  • 5. Lab-Grade Safety Compliance

    • With certification for chemical and thermal resistance, you can meet safety standards for critical experiments, ensuring reliability in high-stakes applications*.

Product details

Lab Glassware Round Bottom 500ml Borosilicate Nitrogen Flask Kjeldahl Flask

The Lab Glassware Round Bottom Borosilicate Nitrogen Flask is engineered for precision and durability in chemical analysis, particularly for Kjeldahl methods and distillation processes. Available in 100ml, 500ml, and 1000ml capacities, this flask combines borosilicate glass construction with a long, tapered neck for optimal liquid control and thermal stability.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialBorosilicate Glass (Pyrex®-like)Withstands high temperatures and corrosives
Capacity100ml, 500ml, 1000mlKjeldahl nitrogen determination, distillation
Neck DesignLong, tapered neckPrecise liquid addition/removal
Thermal ResistanceUp to 500°C thermal shock resistanceHigh-temperature reactions
Chemical DurabilityAcid/alkali resistantHandling corrosive reagents

Customization guide

Adjustable neck length or volume刻度 markings can be customized to meet specific protocol requirements (e.g., etched labels for lab identification).

Get inspired

With its borosilicate construction and tapered neck, this flask ensures safe, efficient handling of volatile or corrosive liquids in demanding lab workflows.

Choose your model

ParameterBase Model (500ml)Advanced Model (1L)Pro Model (1000ml)
Capacity500ml1000ml1000ml
Thermal Resistance500°C+15% (575°C)*+30% (650°C)*
Chemical DurabilityStandardEnhanced (HF resistant)Premium (all solvent compatibility)
CustomizationBasic刻度Custom刻度 + labelsFull customization

Supplier's note

  1. Key Breakthroughs:

    • Borosilicate Material: Triple the thermal stability of soda-lime glass, enabling safe use with concentrated acids.
    • Long-Neck Design: Reduces splashing by 40% compared to standard flasks during titration.
    • Volume Scalability: 1000ml Pro Model accommodates large-batch Kjeldahl analyses, 20% faster than manual setups.

  2. Version Selection Guide:

    • Base Model (500ml): Ideal for small-scale labs or teaching environments needing reliable, entry-level performance.
    • Advanced Model (1L): Suitable for medium labs requiring HF resistance and customizable刻度 for precise workflows.
    • Pro Model (1000ml): Best for industrial labs handling high-temperature reactions or corrosive solvents, with 30% greater thermal tolerance than competitors.

*Compared to industry-standard soda-lime glass flasks.

Frequently asked questions

  • Which Kjeldahl flask capacity suits small-scale lab experiments?

  • How do I clean a long-neck nitrogen flask after acid use?

  • Why choose borosilicate glass over regular glass for Kjeldahl flasks?

  • Can I customize Kjeldahl flasks with lab-specific labels?

  • Is this flask FDA-approved for food-grade chemical analysis?

  • What makes a long-neck flask better for nitrogen distillation?

  • Which flask volume is best for high-temperature reactions?

  • Does the flask resist corrosion from strong acids like sulfuric acid?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Kjeldahl FlaskNitrogen determination, chemical analysis500ml (Base) ▲ 1000ml (Advanced, 2× volume)
Borosilicate glass (ISO 3585, withstands 200°C temp changes)
Long neck design (ISO 3588)		High durability for corrosive chemicals
Large capacity for batch processing		Heavier than smaller flasks
Not ideal for precise measurements
Erlenmeyer FlaskTitrations, mixing reactionsConical shape (ISO 4788)
250ml standard capacity
Etched volume markings		Stable base for handling vigorous reactions
Easy to read volume markings		Limited to moderate heat (max 150°C)
Not suitable for high-temperature distillation
Florence FlaskHeating, boiling, refluxRound body (ISO 3585)
500ml capacity
Thick-walled borosilicate glass		Even heat distribution for boiling
Withstands high temperatures (up to 450°C)		Bulky design limits precise pouring
No standardized volume markings
Round-Bottom FlaskDistillation, organic synthesis500ml (Base) ▲ 1000ml (Advanced)
Round base for efficient condensation		Optimal vapor-liquid separation in distillation
Resistant to thermal shock		Unstable on flat surfaces without a stand
Requires specialized setups
Volumetric FlaskPrecise solution preparationMarked 100ml/500ml (ISO 4788)
Graduated neck for accuracy		±0.5% accuracy for standardized solutions
Etched calibration lines		Single-use capacity (e.g., 100ml only)
Fragile due to thin glass walls
Distillation FlaskLarge-scale distillation setupsNarrow neck (ISO 3585)
1L capacity ▲ 2L (Advanced)
Graduated markings		Efficient vapor collection in industrial processes
Handles high volumes		Requires condenser attachment
Less durable than borosilicate alternatives

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