Skip to product information
25ml-Diameter 42mm x Height 85mm#19-Quartz Double Necked Flask
1/7
  • 25ml-Diameter 42mm x Height 85mm#19-Quartz Double Necked Flask
  • Clear quartz two-neck round-bottom flask with frosted ground joints, showcasing its design on a blue background.
  • High purity quartz two-neck round-bottom flask with ground joints, showcasing its design for high temperature and chemical resistance
  • Quartz double necked flasks demonstrating heat resistance (1200-1450°C flash, 1100°C stable vs. Pyrex ≤500°C), optical clarity for visual monitoring, and resistance to all acids (except HF and hot phosphoric acid).
  • High purity quartz glass double necked flask highlighting 1200°C heat & acid/alkali corrosion resistance, standard grind joints, multi-shape availability, and firm/solid construction.
  • Quartz double necked flasks with authoritative quality assurance certifications, including EU CE marking, ISO9001 Cert, EU EMC Cert, GB Std, RoHS Cert, and SGS Auth Test, confirming material testing and certification reports.
  • Quartz double necked flask showcasing excellent performance: solid weld, no bubbles/striations, high purity (SiO2 ≥99.99%), heat-resistant 1200°C, acid/alkali corrosion resistance, and full customization options
High Purity Quartz Two-Neck Round-Bottom Flasks & Fused Quartz Reaction Vessels | 1200°C Heat & Acid Resistant Labware

High Purity Quartz Two-Neck Round-Bottom Flasks & Fused Quartz Reaction Vessels | 1200°C Heat & Acid Resistant Labware

$40.00

Customization Supported for: Volume, Bulb/Sphere Size, and Non-Standard Ground Joints

For custom orders, please contact customer service

Size（mm）

Contact us for a shipping quote

Whatsapp

quartz 2 neck flask

High Optical Transmission, Excellent Transmittance, High Clarity, High Light Transmission.

High Temperature Resistance, Excellent Thermal Stability, Heat Resistant up to 1200°C.

Wide Range of Sizes, Full Specifications Available, Various Sizes & Specs, Comprehensive Rang

Acid & Alkali Resistant, High Chemical Resistance, Excellent Corrosion Resistance.

Product size

Product parameters

Product Name Quartz Two-Neck Round-Bottom Flask
Material High-Purity Fused Silica (Quartz Glass)
Key Features

  • Excellent high-temperature resistance and superior thermal shock stability.

  • High chemical purity and inertness, resistant to most acids and solvents.

  • Features two standard taper ground glass joints (one vertical center neck, one angled side neck) for versatile connections.

  • Robust, uniform wall thickness for durability; good optical clarity for observation.
Applications

Ideal for complex chemical reactions and processes requiring multiple simultaneous operations or connections. The two-neck design (one center, one angled side neck) facilitates:

  • Simultaneous stirring, refluxing, and addition of reagents.

  • Connection to various apparatus such as stirrers, condensers, dropping funnels, thermometers, or gas inlet/outlet tubes.

  • Suitable for synthesis, distillation, and other advanced laboratory procedures demanding high thermal stress resistance and chemical purity.

 

Quartz Performance Table

Mechanical Properties Typical Value Thermal Properties Typical Value Electrical Properties Typical Value
Density 2.2 g/cm³ Softening Point 1780°C Electrical Resistivity 7 x 107 Ω·cm
Compressive Strength 1100 MPa Annealing Point 1250°C Dielectric Strength 250 - 400 kV/cm
Flexural Strength 67 MPa Specific Heat (20-350°C) 670 J/kg·°C Dielectric Constant 3.7 - 3.9
Tensile Strength 48 MPa Thermal Conductivity (20°C) 1.4 W/m·°C Dielectric Absorption Coefficient <1 x 10-4
Poisson's Ratio 0.14 - 0.17 Refractive Index 1.4585 Dielectric Loss Tangent <1 x 10-4
Young's Modulus 72000 MPa Coefficient of Thermal Expansion 5.5 x 10-7 /°C
Shear Modulus 31000 kPa Working Temperature 1750 - 2050°C
Mohs Hardness 5.5 - 6.5 Short-Term Service Temperature 1300°C
Strain Point 1280°C Continuous Service Temperature 1100°C

Full specification

Single-Neck, Two-Neck, Three-Neck & Four-Neck Flasks | In Stock for Fast Dispatch | Customization Supported

Heat resistance

Standard Taper Joint
Excellent Airtight Seal

High Transmittance

Finely Ground Surface
Precision Standard Taper

You may also like