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  • Kjeldahl Digestion Apparatus Glass Boiling Tubes
  • Kjeldahl Digestion Apparatus Glass Boiling Tubes
  • Kjeldahl Digestion Apparatus Glass Boiling Tubes
  • Kjeldahl Digestion Apparatus Glass Boiling Tubes
  • Kjeldahl Digestion Apparatus Glass Boiling Tubes
  • Kjeldahl Digestion Apparatus Glass Boiling Tubes
Kjeldahl Digestion Apparatus Glass Boiling Tubes
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Kjeldahl Digestion Apparatus Glass Boiling Tubes

$3.00-$5.30/ Unit|10 Unit/Units(Min. Order)

Customization:

Customized logo（Min.Order: 500 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 500 pieces）
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Kjeldahl Digestion Apparatus Glass Boiling Tubes

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Kjeldahl Nitrogen Analysis: Designed for precise digestion of organic samples in nitrogen content determination, critical for protein analysis in food, feed, and agricultural research.
  • High-Temperature Resistance: Borosilicate glass construction ensures durability under extreme heat during digestion processes, with graduated markings for accurate volume tracking.

Key features

  • 1. Material Technology

    • With chemically inert borosilicate glass construction, ensure resistance to harsh chemicals and extreme temperatures up to 500°C, outperforming standard glass tubes in durability and safety.*

  • 2. Interactive Design

    • With a secure ground-glass stopper design, achieve a leak-proof seal during vigorous boiling, minimizing contamination risks compared to loose-fitting closures.*

  • 3. Performance Parameters

    • With a 250 mL capacity and rapid heat distribution, accommodate standard digestion volumes while reducing processing time by up to 20% versus narrower tubes.*

  • 4. Scenario Solutions

    • Designed specifically for Kjeldahl digestion workflows, streamline nitrogen analysis in laboratories and quality control environments, ensuring precise results for food or agricultural testing.*

  • 5. Certification Standards

    • Complies with ISO 9001 quality management standards, ensuring consistent safety and performance for chemical resistance and thermal stability.*

Product details

Kjeldahl Digestion Apparatus Glass Boiling Tubes

The Kjeldahl Digestion Apparatus Glass Boiling Tubes are precision laboratory tools designed for accurate nitrogen content analysis via the Kjeldahl method. Crafted from borosilicate glass, these tubes ensure chemical resistance and thermal stability, making them ideal for digesting protein-rich samples in harsh acidic environments.

Technical specifications

FeatureSpecificationBenefit
MaterialBorosilicate GlassWithstands high temperatures and acids
Temperature Range0°C to 500°CSafe for prolonged boiling in digestion
Volume Capacity250 mL (customizable)Accommodates varied sample sizes
Chemical ResistanceAcid-proof (H₂SO₄, HClO₄)Prevents corrosion and contamination

Customization guide

Adjustable parameters include tube length (15-30 cm) and diameter (2-4 cm) to meet specific digestion protocols. For high-viscosity samples, thicker-walled tubes (+20% wall thickness) ensure structural integrity.

Get inspired

Use these tubes to streamline digestion steps in food, agricultural, or environmental testing labs. Their clarity allows real-time monitoring of reaction progress, while robust construction minimizes breakage risks.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Temperature Range0–450°C0–500°C0–550°C*
Chemical ResistanceAcid-resistantAcid + alkali-proofTriple-certified
Volume Capacity200–300 mL250–400 mL300–500 mL

Supplier's note

  1. Technical Breakthroughs:

    • Borosilicate Glass: Withstands 550°C (Pro model) – 20% higher than industry standards – enabling faster digestion cycles.
    • Triple-Certified Resistance: The Pro model’s chemical inertness handles concentrated HClO₄, reducing sample contamination risks.
    • Customizable Dimensions: Adjustable diameters (up to 4 cm) accommodate viscous samples, improving lab workflow efficiency.

  2. Optimal Version Selection:

    • Base Model: Ideal for routine labs analyzing standard samples (e.g., grains, water). Its 200–300 mL capacity balances cost and performance.
    • Advanced Model: Suitable for research facilities needing alkali resistance (e.g., digesting fertilizers). The 400 mL capacity suits bulk testing.
    • Pro Model: Best for industrial labs handling toxic chemicals (e.g., heavy metals). With 550°C tolerance, it accelerates digestion by 15% compared to traditional models.

*Pro model exceeds ISO 9001:2015 thermal stability benchmarks by 30%.

Frequently asked questions

  • Which Kjeldahl digestion apparatus glass boiling tubes are best for high-volume laboratories?

  • How do I clean Kjeldahl digestion glass boiling tubes after sulfuric acid digestion?

  • Why choose glass boiling tubes over plastic for Kjeldahl nitrogen analysis?

  • Are your Kjeldahl digestion glass tubes ASTM E285-19 certified?

  • Can I customize the size or markings on Kjeldahl digestion glass boiling tubes?

  • How do your glass tubes prevent breakage during high-temperature digestion?

  • What’s the capacity range of your Kjeldahl digestion glass boiling tube sets?

  • Are these glass boiling tubes suitable for automated digestion systems?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionHigh-purity/Corrosive EnvironmentsIndustry: Borosilicate Glass (ASTM E1359)
Base: Same
Advanced: Fused Silica (ISO 3585) ▲▲		Superior chemical resistance, purityHigher cost for Advanced
Temperature ResistanceHigh-Heat DigestionIndustry: 500°C (ISO 719)
Base: Same
Advanced: 600°C (ASTM C336) ▲		Handles extreme tempsAdvanced may be heavier
Chemical ResistanceStrong Acid/Base HandlingIndustry: Resists 50+ chemicals (ASTM D543)
Base: Same
Advanced: 100+ (ISO 10993) ▲▲		Wider chemical compatibilityIncreased cost
Thermal Shock ResistanceRapid Temp ChangesIndustry: 100°C change (ASTM C330)
Base: 150°C ▲
Advanced: 200°C ▲▲		Better for fluctuating tempsAdvanced may require careful handling
Durability (Drop Test)Frequent HandlingIndustry: Survives 1m drop (ISO 6487)
Base: 1.2m ▲
Advanced: 1.5m ▲▲		More resistant to accidental dropsThicker walls may affect clarity
WeightPortable UseIndustry: 50g (ISO 10545-3)
Base: 52g ▲
Advanced: 48g ▲▲ (lighter fused silica)		Easier to handle/portablePotential fragility in Advanced

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